tailscale

Commit Graph

Author	SHA1	Message	Date
Irbe Krumina	8cc2738609	cmd/{containerboot,k8s-operator}: store proxy device ID early to help with cleanup for broken proxies (#12425 ) * cmd/containerboot: store device ID before setting up proxy routes. For containerboot instances whose state needs to be stored in a Kubernetes Secret, we additonally store the device's ID, FQDN and IPs. This is used, between other, by the Kubernetes operator, who uses the ID to delete the device when resources need cleaning up and writes the FQDN and IPs on various kube resource statuses for visibility. This change shifts storing device ID earlier in the proxy setup flow, to ensure that if proxy routing setup fails, the device can still be deleted. Updates tailscale/tailscale#12146 Signed-off-by: Irbe Krumina <irbe@tailscale.com> * code review feedback Signed-off-by: Irbe Krumina <irbe@tailscale.com> --------- Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Andrew Lytvynov	674c998e93	cmd/tailscale/cli: do not allow update --version on macOS (#12508 ) We do not support specific version updates or track switching on macOS. Do not populate the flag to avoid confusion. Updates #cleanup Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	5 months ago
Brad Fitzpatrick	86e0f9b912	net/ipset, wgengine/filter/filtertype: add split-out packages This moves NewContainsIPFunc from tsaddr to new ipset package. And wgengine/filter types gets split into wgengine/filter/filtertype, so netmap (and thus the CLI, etc) doesn't need to bring in ipset, bart, etc. Then add a test making sure the CLI deps don't regress. Updates #1278 Change-Id: Ia246d6d9502bbefbdeacc4aef1bed9c8b24f54d5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	64ac64fb66	net/tsaddr: use bart in NewContainsIPFunc, add tests, benchmarks NewContainsIPFunc was previously documented as performing poorly if there were many netip.Prefixes to search over. As such, we never it used it in such cases. This updates it to use bart at a certain threshold (over 6 prefixes, currently), at which point the bart lookup overhead pays off. This is currently kinda useless because we're not using it. But now we can and get wins elsewhere. And we can remove the caveat in the docs. goos: darwin goarch: arm64 pkg: tailscale.com/net/tsaddr │ before │ after │ │ sec/op │ sec/op vs base │ NewContainsIPFunc/empty-8 2.215n ± 11% 2.239n ± 1% +1.08% (p=0.022 n=10) NewContainsIPFunc/cidr-list-1-8 17.44n ± 0% 17.59n ± 6% +0.89% (p=0.000 n=10) NewContainsIPFunc/cidr-list-2-8 27.85n ± 0% 28.13n ± 1% +1.01% (p=0.000 n=10) NewContainsIPFunc/cidr-list-3-8 36.05n ± 0% 36.56n ± 13% +1.41% (p=0.000 n=10) NewContainsIPFunc/cidr-list-4-8 43.73n ± 0% 44.38n ± 1% +1.50% (p=0.000 n=10) NewContainsIPFunc/cidr-list-5-8 51.61n ± 2% 51.75n ± 0% ~ (p=0.101 n=10) NewContainsIPFunc/cidr-list-10-8 95.65n ± 0% 68.92n ± 0% -27.94% (p=0.000 n=10) NewContainsIPFunc/one-ip-8 4.466n ± 0% 4.469n ± 1% ~ (p=0.491 n=10) NewContainsIPFunc/two-ip-8 8.002n ± 1% 7.997n ± 4% ~ (p=0.697 n=10) NewContainsIPFunc/three-ip-8 27.98n ± 1% 27.75n ± 0% -0.82% (p=0.012 n=10) geomean 19.60n 19.07n -2.71% Updates #12486 Change-Id: I2e2320cc4384f875f41721374da536bab995c1ce Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Maisem Ali	491483d599	cmd/viewer,type/views: add MapSlice for maps of slices This abstraction provides a nicer way to work with maps of slices without having to write out three long type params. This also allows it to provide an AsMap implementation which copies the map and the slices at least. Updates tailscale/corp#20910 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Nick Khyl	c32efd9118	various: create a catch-all NRPT rule when "Override local DNS" is enabled on Windows Without this rule, Windows 8.1 and newer devices issue parallel DNS requests to DNS servers associated with all network adapters, even when "Override local DNS" is enabled and/or a Mullvad exit node is being used, resulting in DNS leaks. This also adds "disable-local-dns-override-via-nrpt" nodeAttr that can be used to disable the new behavior if needed. Fixes tailscale/corp#20718 Signed-off-by: Nick Khyl <nickk@tailscale.com>	5 months ago
Aaron Klotz	bd2a6d5386	util/winutil: add UserProfile type for (un)loading user profiles S4U logons do not automatically load the associated user profile. In this PR we add UserProfile to handle that part. Windows docs indicate that we should try to resolve a remote profile path when present, so we attempt to do so when the local computer is joined to a domain. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Jordan Whited	9189fe007b	cmd/stunc: support user-specified port (#12469 ) Updates tailscale/corp#20689 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Jordan Whited	65888d95c9	derp/xdp,cmd/xdpderper: initial skeleton (#12390 ) This commit introduces a userspace program for managing an experimental eBPF XDP STUN server program. derp/xdp contains the eBPF pseudo-C along with a Go pkg for loading it and exporting its metrics. cmd/xdpderper is a package main user of derp/xdp. Updates tailscale/corp#20689 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Brad Fitzpatrick	ccdd2e6650	cmd/derper: add a README Updates tailscale/corp#20844 Change-Id: Ie3ca5dd7f582f4f298339dd3cd2039243c204ef8 Co-authored-by: James Tucker <james@tailscale.com> Co-authored-by: Maisem Ali <maisem@tailscale.com> Co-authored-by: Andrew Dunham <andrew@tailscale.com> Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
JunYanBJSS	4c01ce9f43	tsnet: fix error formatting bug Fixes #12411 Signed-off-by: JunYanBJSS <johnnycocoyan@hotmail.com>	5 months ago
Aaron Klotz	3511d1f8a2	cmd/tailscaled, net/dns, wgengine/router: start Windows child processes with DETACHED_PROCESS when I/O is being piped When we're starting child processes on Windows that are CLI programs that don't need to output to a console, we should pass in DETACHED_PROCESS as a CreationFlag on SysProcAttr. This prevents the OS from even creating a console for the child (and paying the associated time/space penalty for new conhost processes). This is more efficient than letting the OS create the console window and then subsequently trying to hide it, which we were doing at a few callsites. Fixes #12270 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Irbe Krumina	bc53ebd4a0	ipn/{ipnlocal,localapi},net/netkernelconf,client/tailscale,cmd/containerboot: optionally enable UDP GRO forwarding for containers (#12410 ) Add a new TS_EXPERIMENTAL_ENABLE_FORWARDING_OPTIMIZATIONS env var that can be set for tailscale/tailscale container running as a subnet router or exit node to enable UDP GRO forwarding for improved performance. See https://tailscale.com/kb/1320/performance-best-practices#linux-optimizations-for-subnet-routers-and-exit-nodes This is currently considered an experimental approach; the configuration support is partially to allow further experimentation with containerized environments to evaluate the performance improvements. Updates tailscale/tailscale#12295 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Irbe Krumina	6f2bae019f	cmd/k8s-nameserver: fix AAAA record query response (#12412 ) Return empty response and NOERROR for AAAA record queries for DNS names for which we have an A record. This is to allow for callers that might be first sending an AAAA query and then, if that does not return a response, follow with an A record query. Previously we were returning NOTIMPL that caused some callers to potentially not follow with an A record query or misbehave in different ways. Also return NXDOMAIN for AAAA record queries for names that we DO NOT have an A record for to ensure that the callers do not follow up with an A record query. Returning an empty response and NOERROR is the behaviour that RFC 4074 recommends: https://datatracker.ietf.org/doc/html/rfc4074 Updates tailscale/tailscale#12321 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Aaron Klotz	df86576989	util/winutil: add AllocateContiguousBuffer and SetNTString helper funcs AllocateContiguousBuffer is for allocating structs with trailing buffers containing additional data. It is to be used for various Windows structures containing pointers to data located immediately after the struct. SetNTString performs in-place setting of windows.NTString and windows.NTUnicodeString. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Irbe Krumina	c3e2b7347b	tailcfg,cmd/k8s-operator,kube: move Kubernetes cap to a location that can be shared with control (#12236 ) This PR is in prep of adding logic to control to be able to parse tailscale.com/cap/kubernetes grants in control: - moves the type definition of PeerCapabilityKubernetes cap to a location shared with control. - update the Kubernetes cap rule definition with fields for granting kubectl exec session recording capabilities. - adds a convenience function to produce tailcfg.RawMessage from an arbitrary cap rule and a test for it. An example grant defined via ACLs: "grants": [{ "src": ["tag:eng"], "dst": ["tag:k8s-operator"], "app": { "tailscale.com/cap/kubernetes": [{ "recorder": ["tag:my-recorder"] “enforceRecorder”: true }], }, } ] This grant enforces `kubectl exec` sessions from tailnet clients, matching `tag:eng` via API server proxy matching `tag:k8s-operator` to be recorded and recording to be sent to a tsrecorder instance, matching `tag:my-recorder`. The type needs to be shared with control because we want control to parse this cap and resolve tags to peer IPs. Updates tailscale/corp#19821 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Irbe Krumina	807934f00c	cmd/k8s-operator,k8s-operator: allow proxies accept advertized routes. (#12388 ) Add a new .spec.tailscale.acceptRoutes field to ProxyClass, that can be optionally set to true for the proxies to accept routes advertized by other nodes on tailnet (equivalent of setting --accept-routes to true). Updates tailscale/tailscale#12322,tailscale/tailscale#10684 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Irbe Krumina	53d9cac196	k8s-operator/apis/v1alpha1,cmd/k8s-operator/deploy/examples: update DNSConfig description (#11971 ) Also removes hardcoded image repo/tag from example DNSConfig resource as the operator now knows how to default those. Updates tailscale/tailscale#11019 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Tom Proctor	23e26e589f	cmd/k8s-operator,k8s-opeerator: include Connector's MagicDNS name and tailnet IPs in status (#12359 ) Add new fields TailnetIPs and Hostname to Connector Status. These contain the addresses of the Tailscale node that the operator created for the Connector to aid debugging. Fixes #12214 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	5 months ago
Irbe Krumina	3a6d3f1a5b	cmd/k8s-operator,k8s-operator,go.{mod,sum}: make individual proxy images/image pull policies configurable (#11928 ) cmd/k8s-operator,k8s-operator,go.{mod,sum}: make individual proxy images/image pull policies configurable Allow to configure images and image pull policies for individual proxies via ProxyClass.Spec.StatefulSet.Pod.{TailscaleContainer,TailscaleInitContainer}.Image, and ProxyClass.Spec.StatefulSet.Pod.{TailscaleContainer,TailscaleInitContainer}.ImagePullPolicy fields. Document that we have images in ghcr.io on the relevant Helm chart fields. Updates tailscale/tailscale#11675 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Andrew Dunham	e88a5dbc92	various: fix lint warnings Some lint warnings caught by running 'make lint' locally. Updates #cleanup Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1534ed6f2f5e1eb029658906f9d62607dad98ca3	5 months ago
Brad Fitzpatrick	8a11a43c28	cmd/derpprobe: support 'local' derpmap to get derp map via LocalAPI To make it easier for people to monitor their custom DERP fleet. Updates tailscale/corp#20654 Change-Id: Id8af22936a6d893cc7b6186d298ab794a2672524 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Jordan Whited	6e106712f6	cmd/stunstamp: support probing multiple ports (#12356 ) Updates tailscale/corp#20344 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Maisem Ali	36e8e8cd64	wgengine/magicsock: use math/rands/v2 Updates #11058 Co-authored-by: James Tucker <james@tailscale.com> Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Fran Bull	573c8bd8c7	cmd/natc: add --wg-port flag Updates tailscale/corp#20503 Signed-off-by: Fran Bull <fran@tailscale.com>	5 months ago
Maisem Ali	4a8cb1d9f3	all: use math/rand/v2 more Updates #11058 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Fran Bull	d2d459d442	cmd/natc: add --ignore-destinations flag Updates tailscale/corp#20503 Signed-off-by: Fran Bull <fran@tailscale.com>	5 months ago
Jordan Whited	cf1e6c6e55	cmd/stunstamp: fix remote write retry (#12348 ) Evaluation of remote write errors was using errors.Is() where it should have been using errors.As(). Updates tailscale/corp#20344 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Irbe Krumina	82576190a7	tailcfg,cmd/k8s-operator: moves tailscale.com/cap/kubernetes peer cap to tailcfg (#12235 ) This is done in preparation for adding kubectl session recording rules to this capability grant that will need to be unmarshalled by control, so will also need to be in a shared location. Updates tailscale/corp#19821 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
signed-long	1dc3136a24	cmd/k8s-operator: Support image 'repo' or 'repository' keys in helm values file (#12285 ) cmd/k8s-operator/deploy/chart: Support image 'repo' or 'repository' keys in helm values Fixes #12100 Signed-off-by: Michael Long <michaelongdev@gmail.com>	5 months ago
Jordan Whited	ba0dd493c8	cmd/stunstamp: validate STUN tx ID in responses (#12339 ) Extremely late arriving responses may leak across probing intervals. Updates tailscale/corp#20344 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Maisem Ali	2f2f588c80	cmd/natc: use ListenPacket Now that tsnet supports it, use it. Updates tailscale/corp#20503 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Maisem Ali	0b1a8586eb	cmd/natc: initial implementation of a NAT based connector This adds a new prototype `cmd/natc` which can be used to expose a services/domains to the tailnet. It requires the user to specify a set of IPv4 prefixes from the CGNAT range. It advertises these as normal subnet routes. It listens for DNS on the first IP of the first range provided to it. When it gets a DNS query it allocates an IP for that domain from the v4 range. Subsequent connections to the assigned IP are then tcp proxied to the domain. It is marked as a WIP prototype and requires the use of the `TAILSCALE_USE_WIP_CODE` env var. Updates tailscale/corp#20503 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Jordan Whited	d21c00205d	cmd/stunstamp: implement service to measure DERP STUN RTT (#12241 ) stunstamp timestamping includes userspace and SO_TIMESTAMPING kernel timestamping where available. Measurements are written locally to a sqlite DB, exposed over an HTTP API, and written to prometheus via remote-write protocol. Updates tailscale/corp#20344 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Maisem Ali	42cfbf427c	tsnet,wgengine/netstack: add ListenPacket and tests This adds a new ListenPacket function on tsnet.Server which acts mostly like `net.ListenPacket`. Unlike `Server.Listen`, this requires listening on a specific IP and does not automatically listen on both V4 and V6 addresses of the Server when the IP is unspecified. To test this, it also adds UDP support to tsdial.Dialer.UserDial and plumbs it through the localapi. Then an associated test to make sure the UDP functionality works from both sides. Updates #12182 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Irbe Krumina	c2a4719e9e	cmd/tailscale/cli: allow 'tailscale up' to succeed if --stateful-filtering is not explicitly set on linux (#12312 ) This fixes an issue where, on containerized environments an upgrade 1.66.3 -> 1.66.4 failed with default containerboot configuration. This was because containerboot by default runs 'tailscale up' that requires all previously set flags to be explicitly provided on subsequent runs and we explicitly set --stateful-filtering to true on 1.66.3, removed that settingon 1.66.4. Updates tailscale/tailscale#12307 Signed-off-by: Irbe Krumina <irbe@tailscale.com> Co-authored-by: Andrew Lytvynov <awly@tailscale.com>	5 months ago
ChandonPierre	0a5bd63d32	ipn/store/kubestore, cmd/containerboot: allow overriding client api server URL via ENV (#12115 ) Updates tailscale/tailscale#11397 Signed-off-by: Chandon Pierre <cpierre@coreweave.com>	5 months ago
Anton Tolchanov	32120932a5	cmd/tailscale/cli: print node signature in `tailscale lock status` - Add current node signature to `ipnstate.NetworkLockStatus`; - Print current node signature in a human-friendly format as part of `tailscale lock status`. Examples: ``` $ tailscale lock status Tailnet lock is ENABLED. This node is accessible under tailnet lock. Node signature: SigKind: direct Pubkey: [OTB3a] KeyID: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943 WrappingPubkey: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943 This node's tailnet-lock key: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943 Trusted signing keys: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943 1 (self) tlpub:6fa21d242a202b290de85926ba3893a6861888679a73bc3a43f49539d67c9764 1 (pre-auth key kq3NzejWoS11KTM59) ``` For a node created via a signed auth key: ``` This node is accessible under tailnet lock. Node signature: SigKind: rotation Pubkey: [e3nAO] Nested: SigKind: credential KeyID: tlpub:6fa21d242a202b290de85926ba3893a6861888679a73bc3a43f49539d67c9764 WrappingPubkey: tlpub:3623b0412cab0029cb1918806435709b5947ae03554050f20caf66629f21220a ``` For a node that rotated its key a few times: ``` This node is accessible under tailnet lock. Node signature: SigKind: rotation Pubkey: [DOzL4] Nested: SigKind: rotation Pubkey: [S/9yU] Nested: SigKind: rotation Pubkey: [9E9v4] Nested: SigKind: direct Pubkey: [3QHTJ] KeyID: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943 WrappingPubkey: tlpub:2faa280025d3aba0884615f710d8c50590b052c01a004c2b4c2c9434702ae9d0 ``` Updates tailscale/corp#19764 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	5 months ago
Brad Fitzpatrick	1ea100e2e5	cmd/tailscaled, ipn/conffile: support ec2 user-data config file Updates #1412 Updates #1866 Change-Id: I4d08fb233b80c2078b3b28ffc18559baabb4a081 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
signed-long	5ad0dad15e	go generate directives reorder for 'make kube-generate-all' (#12210 ) Fixes #11980 Signed-off-by: Michael Long <michaelongdev@gmail.com>	6 months ago
Irbe Krumina	d0d33f257f	cmd/k8s-operator: add a note pointing at ProxyClass (#12246 ) Updates tailscale/tailscale#12242 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	6 months ago
Maisem Ali	9a64c06a20	all: do not depend on the testing package Discovered while looking for something else. Updates tailscale/corp#18935 Signed-off-by: Maisem Ali <maisem@tailscale.com>	6 months ago
Brad Fitzpatrick	3c9be07214	cmd/derper: support TXT-mediated unpublished bootstrap DNS rollouts Updates tailscale/coral#127 Change-Id: I2712c50630d0d1272c30305fa5a1899a19ffacef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Irbe Krumina	72f0f53ed0	cmd/k8s-operator: fix typo (#12217 ) Fixes#cleanup Signed-off-by: Irbe Krumina <irbe@tailscale.com>	6 months ago
James Tucker	9351eec3e1	net/netcheck: remove hairpin probes Palo Alto reported interpreting hairpin probes as LAND attacks, and the firewalls may be responding to this by shutting down otherwise in use NAT sessions prematurely. We don't currently make use of the outcome of the hairpin probes, and they contribute to other user confusion with e.g. the AirPort Extreme hairpin session workaround. We decided in response to remove the whole probe feature as a result. Updates #188 Updates tailscale/corp#19106 Updates tailscale/corp#19116 Signed-off-by: James Tucker <james@tailscale.com>	6 months ago
Andrew Lytvynov	c9179bc261	various: disable stateful filtering by default (#12197 ) After some analysis, stateful filtering is only necessary in tailnets that use `autogroup:danger-all` in `src` in ACLs. And in those cases users explicitly specify that hosts outside of the tailnet should be able to reach their nodes. To fix local DNS breakage in containers, we disable stateful filtering by default. Updates #12108 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	6 months ago
Brad Fitzpatrick	964282d34f	ipn,wgengine: remove vestigial Prefs.AllowSingleHosts It was requested by the first customer 4-5 years ago and only used for a brief moment of time. We later added netmap visibility trimming which removes the need for this. It's been hidden by the CLI for quite some time and never documented anywhere else. This keeps the CLI flag, though, out of caution. It just returns an error if it's set to anything but true (its default). Fixes #12058 Change-Id: I7514ba572e7b82519b04ed603ff9f3bdbaecfda7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Jordan Whited	adb7a86559	cmd/stunc: support ipv6 address targets (#12166 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	6 months ago
James Tucker	8d1249550a	net/netcheck,wgengine/magicsock: add potential workaround for Palo Alto DIPP misbehavior Palo Alto firewalls have a typically hard NAT, but also have a mode called Persistent DIPP that is supposed to provide consistent port mapping suitable for STUN resolution of public ports. Persistent DIPP works initially on most Palo Alto firewalls, but some models/software versions have a bug which this works around. The bug symptom presents as follows: - STUN sessions resolve a consistent public IP:port to start with - Much later netchecks report the same IP:Port for a subset of sessions, most often the users active DERP, and/or the port related to sustained traffic. - The broader set of DERPs in a full netcheck will now consistently observe a new IP:Port. - After this point of observation, new inbound connections will only succeed to the new IP:Port observed, and existing/old sessions will only work to the old binding. In this patch we now advertise the lowest latency global endpoint discovered as we always have, but in addition any global endpoints that are observed more than once in a single netcheck report. This should provide viable endpoints for potential connection establishment across a NAT with this behavior. Updates tailscale/corp#19106 Signed-off-by: James Tucker <james@tailscale.com>	6 months ago
Andrea Gottardo	e5f67f90a2	xcode: allow ICMP ping relay on macOS + iOS platforms (#12048 ) Fixes tailscale/tailscale#10393 Fixes tailscale/corp#15412 Fixes tailscale/corp#19808 On Apple platforms, exit nodes and subnet routers have been unable to relay pings from Tailscale devices to non-Tailscale devices due to sandbox restrictions imposed on our network extensions by Apple. The sandbox prevented the code in netstack.go from spawning the `ping` process which we were using. Replace that exec call with logic to send an ICMP echo request directly, which appears to work in userspace, and not trigger a sandbox violation in the syslog. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	6 months ago

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