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Mihai Parparita 6842c3c194 net/interfaces: redo how we get the default interface on macOS and iOS ... With #6566 we added an external mechanism for getting the default interface, and used it on macOS and iOS (see tailscale/corp#8201). The goal was to be able to get the default physical interface even when using an exit node (in which case the routing table would say that the Tailscale utun* interface is the default). However, the external mechanism turns out to be unreliable in some cases, e.g. when multiple cellular interfaces are present/toggled (I have occasionally gotten my phone into a state where it reports the pdp_ip1 interface as the default, even though it can't actually route traffic). It was observed that `ifconfig -v` on macOS reports an "effective interface" for the Tailscale utn* interface, which seems promising. By examining the ifconfig source code, it turns out that this is done via a SIOCGIFDELEGATE ioctl syscall. Though this is a private API, it appears to have been around for a long time (e.g. it's in the 10.13 xnu release at https://opensource.apple.com/source/xnu/xnu-4570.41.2/bsd/net/if_types.h.auto.html) and thus is unlikely to go away. We can thus use this ioctl if the routing table says that a utun* interface is the default, and go back to the simpler mechanism that we had before #6566. Updates #7184 Updates #7188 Signed-off-by: Mihai Parparita <mihai@tailscale.com> (cherry picked from commit fa932fefe7)		1 year ago
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addlicense	cmd/addlicense: add command to add licenseheaders to generated code	3 years ago
cloner	util/codegen, all: use latest year, not time.Now, in generated files	1 year ago
containerboot	cmd/containerboot: use TS_AUTHKEY as the parameter for auth keys	1 year ago
derper	net/interfaces: redo how we get the default interface on macOS and iOS	1 year ago
derpprobe	cmd/derpprobe: add -once flag for one-off CLI diagnostics	2 years ago
get-authkey	cmd/get-authkey: add an OAuth API client to produce an authkey	1 year ago
gitops-pusher	cmd/gitops-pusher: support alternate api-server URLs	1 year ago
hello	refactor: move from io/ioutil to io and os packages	2 years ago
k8s-operator	cmd/k8s-operator: remove use of InjectClient (deprecated)	1 year ago
mkmanifest	cmd/{tailscale,tailscaled}: embed manifest into Windows binaries	2 years ago
mkpkg	cmd/mkpkg: allow specifying recommended dependencies	1 year ago
nardump	cmd/nardump: Go tool to build Nix NARs and compute their hashes.	1 year ago
netlogfmt	cmd/netlogfmt: handle any stream of network logs (#6108)	2 years ago
nginx-auth	cmd/nginx-auth: add experimental status badge to README	2 years ago
pgproxy	cmd/pgproxy: link to blog post at the top.	2 years ago
printdep	cmd/printdep: support printing the toolchain SRI hash.	1 year ago
proxy-to-grafana	all: gofmt for Go 1.19	2 years ago
speedtest	net/speedtest: retune to meet iperf on localhost in a VM	2 years ago
ssh-auth-none-demo	ssh/tailssh: add password-forcing workaround for buggy SSH clients	2 years ago
stunc	cmd/stunc: add command for making debug stun requests	2 years ago
sync-containers	cmd/sync-containers: add a dry-run option.	1 year ago
tailscale	cmd/tailscale/cli: fix TUNmode display on synology web page (#7064)	1 year ago
tailscaled	go.mod: bump AWS SDK past a breaking API change of theirs	1 year ago
testcontrol	all: use any instead of interface{}	2 years ago
testwrapper	tstest/integration: mark all integration tests as flaky	1 year ago
tsconnect	wgengine/netstack: change netstack API to require LocalBackend	1 year ago
tsshd	all: remove old +build tags	2 years ago
viewer	util/codegen, all: use latest year, not time.Now, in generated files	1 year ago