tailscale

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dependabot/github_actions/github/codeql-action-3.27.5

kradalby/less-flaky-usermetric-tests

main

irbekrm/proxycapver

tomhjp/egress-pg-port-collision

bradfitz/avoid_initial

bradfitz/devattr

percy/issue24522-1-continuous-bandwidth

dependabot/github_actions/slackapi/slack-github-action-2.0.0

dependabot/github_actions/actions/checkout-4.2.2

flakes

dependabot/npm_and_yarn/client/web/cross-spawn-7.0.5

raggi/derp-intern-key

bradfitz/controll

jonathan/netmap_ratelimiter

percy/issue24522-2-region-restrict-yaml

andrew/dnscache-hard-code-localhost

irbekrm/debug

tomhjp/transient-pg-errors

bradfitz/nodepublic_uniq

bradfitz/bench

fran/natc-raft

irbekrm/connector_multireplica

release-branch/1.76

bradfitz/percy/unforked-ssh-try-gomod

percy/unforked-ssh-try

operator_direct_connections

bradfitz/mesh_vpc

irbekrm/egressc

knyar/metricshelp

tomhjp/k8s-diagrams

irbekrm/serve_log

andrew/keyfallback

naman/web-client-update-fixes

percy/derp-jwt

andrew/wgengine-router-debug

bradfitz/cmd_printmetric

adrian/stricter-labels

bradfitz/ssh_config_from_env

dsnet/tsweb-localhost

kradalby/usermetrics-wgengine-errors

dsnet/slices-collect

tomhjp/tailscaled-kube-conf

mpminardi/dsm-7-2-builds-fix

13765-taildrive-server-unexpectedly-starts-on-apple-tv

angott/23782

bradfitz/vizerrinternal2

bradfitz/vizinternal

fran/fix-appc-routes

irbekrm/egressconfig

dependabot/github_actions/golangci/golangci-lint-action-6.1.1

13685-low-memory-mode-in-logtail-may-no-longer-be-needed

angott/doh-clients-sleep-mode

release-branch/1.74

tomhjp/comparable-struct-as-key

adrian/vip

andrew/noise-conn-test

bradfitz/quic_dns

knyar/usermetrics-wgengine

raggi/eperm-health

fran/natc-consensus-prototype

bradfitz/dup_add

bradfitz/derp_flow_track

dependabot/npm_and_yarn/client/web/rollup-4.22.4

kradalby/userfacing-metrics-moar

angott/dns-cli-stream

dependabot/npm_and_yarn/client/web/vite-5.1.8

maisem/tsnet-forward

bradfitz/rm_x_crypto_fork

angott/captive-exit-node-disablement

bradfitz/bumptoolchain

angott/tvos-23087

nickkhyl/http2-for-win-safesocket

irbekrm/egresshapm

dependabot/npm_and_yarn/cmd/tsconnect/micromatch-4.0.8

irbekrm/egressha

nickkhyl/authurl-notify-backport

jwhited/test-local-forwarder

release-branch/1.72

jonathan/missing_resolvers

knyar/userfacing-metrics

andrew/disco-af-packet-refactor

jwhited/gvisor-revert-gro

irbekrm/proxycidrs

22332-macos-sequoia-hostname

knyar/metrictype

dependabot/go_modules/github.com/docker/docker-26.1.5incompatible

bradfitz/vnet2

jwhited/derp-https-tcp-connect

raggi/callmebaby

awly/cli-json-docs

raggi/linux6644

irbekrm/reload_config

maisem/flake-3

nickkhyl/syspolicy-new

jonathan/vznet

irbekrm/dnat

raggi/dnsfallback

irbekrm/websocket

andrew/captive-use-atomic

marwan/offunc

jwhited/gVisor-gso-gro

release-branch/1.70

tomhjp/e2e-tests

irbekrm/kubetestsetup

irbekrm/eks

dsnet/syncs-lock

raggi/derp-route-optimization

will-systray

bradfitz/json2

andrew/dns-more-logging

andrew/net-dns-systemd-no-stub

release-branch/1.68

fran/fix-appc-write-new-domain

adrian/fix-vet-failures

angott/dns-warnables

andrew/workgraph

agottardo-patch-1

bradfitz/resume

irbekrm/operator_linux_only

nickkhyl/posture-sn-override

kradalby/chaos

angott/ignore-some-warnings-startup

dependabot/npm_and_yarn/cmd/tsconnect/braces-3.0.3

irbekrm/fixsubnets

irbekrm/dnstest

irbekrm/fix

irbekrm/accept_routes

percy/issue8593

percy/issue8593-prep

jonathan/sugg_exit_node_fix

release-branch/1.66

icio/public-key-short

clairew/handle-auto-exit-node-value

knyar/install2

will/tsnet-udp

raggi/web-zst-precompress

raggi/gocross-empty-goos-goarch

andrew/dns-fallback

andrew/prom-omit-metrics

jwhited/android-packet-vectors

knyar/renew

bradfitz/debug_tstest

clairew/revert-storing-last-suggested

andrew/debug-integration-tests

fran/appc-ensmallen-gh-preset

ox/11854-3-sftp

percy/cherry-pick-2648d475d751b47755958f47a366e300b6b6de0a

ox/corp-19592

ox/11954-3

ox/11854

kevin/Split_Remove_advertised_routes_from_pref

dsnet/logtail-buffer2

bradfitz/dataplane_logs_no_logs_no_support

nickkhyl/ipn-user-identity

irbekrm/extsvcnftableslb

andrew/dns-wrap-errors

release-branch/1.64

noncombatant/safeweb-cleanup

bradfitz/login_retry

patrickod/installer-yml-fixup

release-branch/1.64.0

fran/appc-store-routes-by-source

andrew/controlclient-use-last-addr

enable-exit-node-dst-logs

clairew/peer-node-capability-documentation

revert-11590-catzkorn/penguin

enable-exit-node-dst-logs-2

licenses/corp

dsnet/logpolicy-opts

licenses/android

jonathan/taildrop_path

licenses/cli

release-branch/1.62

clairew/log-dst-exit-node

fran/appc-domain-delte-prototype

irbekrm/maybe_fix_v6

oxtoacart/golden_memory

irbekrm/cherry_fix_panic

oxtoacart/no_indent_status

angott/corp-18441

soniaappasamy/serve-funnel-ui

brafitz/remote-config

andrew/control-key-store

maisem/proxy-1

release-branch/1.60

andrew/netstack-forwarder-debug

oxtoacart/immediately_access_shares

knyar/install

irbekrm/splitkeys

oxtoacart/automount

angott/sleep-debug-apis

clairew/suggest-non-mullvad-exit-node

tom/tka4

clairew/add-latitude-longitude

irbekrm/operatorversion

oxtoacart/dsnet_codereview_fixes

clairew/client-suggest-node-poc

raggi/rand

flyingsquirrel_bak

will/containerboot-webui

irbekrm/clustermagicdns

noncombatant/add-hello-systemd

catzkorn/jira

release-branch/1.58

kradalby/view-only-type

clairew/add-disco-pong-padding

clairew/receive-icmp-errors

dgentry-b10911

irbekrm/proxyclass2

irbekrm/proxyclass

irbekrm/byocerts

knyar/worklifeposture

dsnet/httpio

will/webclient-mobile

will/webclient-csrf

irbekrm/static_crd

irbekrm/manifests_crd

maisem/exp-k8s

release-branch/1.44

irbekrm/containerbootdeclarativeconf

kube_exp

irbekrm/conf

raggi/stun-subprocess

andrew/nixos-vm-tests

irbekrm/set_args

andrew/peer-ipv6-addrs

irbekrm/external_services

irbekrm/os

irbekrm/pull_in_certs

irbekrm/kube_build_tags

release-branch/1.56

jwhited/derp-cmm-timestamp

soniaappasamy/use-swr

marwan/displayname

release-branch/1.54

danderson/debug-garden

jwhited/unsafe-exp

clairew/test-wrapper-file

bradfitz/compontent_logs

kradalby-keys-db-interface

kradalby/keys-db-interface

andrew/upnp-unfork

bm/tsoidc

irbekrm/le

knyar/restartmap

kristoffer/editable-tailnet-displayname

raggi/document-deprecated-approach

dsnet/statestore

awly/version-override

bradfitz/silentdisco_knob

richard/15372

raggi/icmplistener

awly/linux-sudoers-local-admin-poc

release-branch/1.52

soniaappasamy/web-auth-restructure

bradfitz/ipx_set_contains

knyar/derpmesh

irbekrm/chartandcli

richard/15037-2

bradfitz/linuxfw_nil_table

richard/15037

bradfitz/tbug

bradfitz/derp_mesh

will/sonia/web-tailscaled

tyler/serve-status

maisem/ni

maisem/hi

rhea/apple-test

dgentry-nix-flake

dgentry-coverage

c761d10

bradfitz/gocross_wantver

awly/ipnlocal-watchnotifications-clientversion

bradfitz/integration_more_tun

bradfitz/recursive_controlknob

dgentry-authkey

dependabot/npm_and_yarn/cmd/tsconnect/postcss-8.4.31

bm/4via6

bradfitz/sessionactivetimeout

release-branch/1.50

rhea/taildrop-resume

andrew/peercap-ipv6-aaaa

irbekrm/k8sipnftheuristics

irbekrm/kubeipnft

irbekrm/k8sipnft

dgentry-istoreos

knyar/posturemac

irbekrm/egress

raggi/restore-extra-records-dns

aaron/win_process_mitigations

danderson/lru-rollback

clairew/mdm-interface

angott/userdefaults-reader

andrew/bump-esbuild

andrew/netns-more-logging

release-branch/1.48

irbekrm/k8s-autopilot

dsnet/viewer-jsonv2

marwan/altmem_stash

irbekrm/k8s-nftables

marwan/postmem

maisem/fix-deadlock

bradfitz/matrix

irbekrm/egress-dns

bradfitz/wait_unpause

bradfitz/calc_state

irbekrm/svc_conditions

soniaappasamy/fix-test-flake

marwan/servedev

soniaappasamy/fix-web-client-lock

raggi/netfilter-runtime

raggi/netfilter-add-modes

marwan/scmem

bradfitz/ignore_ula

clairew/tstime-net

clairew/tstime-wgengine

bradfitz/tkasig_type

shayne/k8s-serve

bradfitz/gui_netmap

macsys-update

catzkorn/netcheckuout

andrew/doctor-conntrack

tsweb/client-ui

valscale/ptb

raggi/gotoolchain

irbekrm/improve_logout

maisem/doc

rhea/egress

noncombatant/large-int-string

release-branch/1.46

andrew/captive-portal-package

s/pmtud

andrew/derp-bound-latency

andrew/health-state

bradfitz/gokrazy_dns

clairew/use-tstime-etc

bradfitz/negdep

raggi/stunc

raggi/gvisor-hostarch-deptest

crawshaw/art-table

irbekrm/fix_logout_loop

clairew/refactor-new-timer

clairew/test-wrapper-write-file

s/tsnetd

bradfitz/countrycode

crawshaw/stunchild

tom/disco

raggi/v6masq

release-branch/1.42

raggi/heartbeat-timebomb

raggi/derp-probe-stun-loss

raggi/tsdebugger

tom/derp

andrew/ipn-debug-1.42.0

marwan/portlistrefactor

marwan/noconstructor

angott/allow-thunderbolt-bridge

marwan/polleropts

marwan/noconstructor2

andrew/slicesx-deduplicate

unraid-web

release-branch/1.40

kristoffer/enable-mips-pkgs

s/eq

raggi/atomiccloseonce

raggi/bump-goreleaserv2

marwan/tmp

catzkorn/addrsend

raggi/gofuzz

shayne/funnel_cmd

release-branch/1.38

dgentry/atomicfile

tom/tka6

maisem/k8s-cache

azure

andrew/fastjson

crawshaw/lnclose

crawshaw/tsnet1

crawshaw/httpconnect

Xe/tsnet-funnel

dgentry/sniproxy-dns

andrew/util-dnsconfig

andrew/cloudenv-location

release-branch/1.36

aaron/migrate_windows

crawshaw/pidlisten

andrew/router-drop-ula

will/vizerr

danderson/mkversion

crawshaw/activesum

andrew/doctor-scutil

danderson/version-private3

bradfitz/sassy

bradfitz/win_unattended_warning

andrew/hostinfo-HavePortMap

skriptble/ssh-recording-persist

crawshaw/ondemanddomains

danderson/helm

andrew/peer-status-KeyExpiry

bradfitz/noise_debug_more

release-branch/1.34

cloner

danderson/backport

clairew/tsnet_get_own_ip

bradfitz/tidy

raggi/tsweb-compression

bradfitz/fix_ipn_cloner

danderson/bootstrap

will/enforce-hostname

mihaip/delete-all-profiles

release-branch/1.32

shayne/serve_empty_text_handler

bradfitz/hostinfo_ingress_bit

mihaip/logout-async-start

net-audit-log/1.32

bradfitz/set_prefs_locked

mihaip/fas

bradfitz/port_intercept

andrew/net-tsaddr-mapviaaddr

danderson/tsburrito

andrew/tstest-goroutine-ignore

andrew/monitor-link-change

danderson/k8s

andrew/debug-subnet-router

andrew/metrics-distribution

crawshaw/accumulatorcfg

bradfitz/keyboard-interactive

bradfitz/tailpipe

raggi/accept-routes-filter

nyghtowl/tailnet-name2

dsnet/tunstats-v2

buildjet

buildjet-vs-github

andrew/netns-macos-route

walterp-api

andrew/linux-router-v4-disabled

bradfitz/distro_ubuntu

tom/iptables

release-branch/1.30

tom/tka2

andrew/dnscache-debugging-1.22.2

andrew/controlclient-dial

raggi/experiment-queues

bradfitz/u32

ip6tables

catzkorn/derp-benchmark

jwhited/wireguard-go-vectorized-bind

catzkorn/otel-init

bradfitz/appendf

mihaip/js-cli

dsnet/tsweb-499s

bradfitz/deephash_early_exit

crawshaw/xdp

dsnet/logtail-zstd-single-segment

Xe/gitops-pusher-three-version-problem

Xe/gitops-pusher-acl-test-error-output

Xe/gitops-pusher-ffcli

bradfitz/ssh_auth_none_demo

release-branch/1.28

catzkorn/otel-derp

bradfitz/shared_split_dns

nyghtowl/fix-resolved

release-branch/1.26

bradfitz/explicit_empty_test_3808

crawshaw/preservenetinfo

miriah-3808-reset-operator

dsnet/tsnet-logging

mihaip/wasm-taildrop

crawshaw/stunname

bradfitz/wasm_play

bradfitz/dot

bradfitz/tcp_flows

release-branch/1.24

raggi/netstack_fwd_close

bradfitz/netstack_fwd_close

merge-tag

cross-android

bradfitz/kmod

bradfitz/ssh_banner

bradfitz/ping

tom/integration

bradfitz/ssh_policy_earlier

bradfitz/derpy_cast

bradfitz/cli_admin

release-branch/1.22

aaron/go-ole-ref

bradfitz/key_rotation_prep

josh/tswebflags

release-branch/1.20

crawshaw/envtype

danderson/tsweb-server

bradfitz/autocert_force

bradfitz/use_netstack_upstream

Xe/winui-bugreport-without-tailscaled

bradfitz/hostinfo_basically_equal

release-branch/1.18

aaron/loglog

aaron/dnsapc

bradfitz/demo_client_hijack

bradfitz/windns

bradfitz/exit_node_forward_dns

bradfitz/1.18.1

Xe/tailtlsproxy

bradfitz/allsrc

josh/peermap

danderson/ebpf

bradfitz/1_16_stress_netmap

danderson/nodekey-move

danderson/nodekey-delete-old

danderson/nodekey-cleanup

danderson/magicsock-discokey

release-branch/1.16

danderson/magicsock-node-key

crawshaw/updatefallback

release-branch/1.14

bradfitz/1.14

bradfitz/updates

josh/immutable-views

bradfitz/portmap_gh_actions

danderson/kernel-tailscale

bradfitz/win_default_route

release-branch/1.12

jknodt/logging

simenghe/add-tsmpping-call

josh/opt-getstatus

Aadi/speedtest-tailscaled

dsnet/admin-cli

bradfitz/portmap_test

jknodt/portmap_test

upnpdebug

jknodt/upnp_reuse

crawshaw/peerdoh

josh/debug-flake

simenghe/pingresult-work

jknodt/derp_flow

tps/tailscaled

jknodt/vms_ref

jknodt/integ_test

josh/fast-time

josh/coarsetime

bradfitz/derp_flow

release-branch/1.10

josh/io_uring

josh/deflake-pipe-again

Xe/testcontrol-v6

jknodt/io-uring

simenghe/admin-ping-test

jknodt/periodic_probe

simenghe/isoping

Xe/private-logcatcher-in-process

simenghe/tcpnodeping

bradfitz/deephash_methods

crawshaw/deephash

josh/de-select-tstun-wrapper

Xe/debug-nixos-build

simenghe/isoping-experiment

crawshaw/dnswslhackery

jknodt/userderp

jknodt/bw_rep2

crawshaw/wslresolvconf

jknodt/upnp

crawshaw/magicdnsalways

simenghe/flakeresolve

rec_in_use_after_5_sec

bradfitz/acme

release-branch/1.8

simenghe/add-httphandlers-ping

simenghe/add-ping-route-testcontrol-mux

simeng-pingtest

Xe/test-install-script-libvirtd

apenwarr/check184

crawshaw/newbackendserver

adding-address-ips-totestcontrolnode

onebinary

Xe/synology-does-actually-work-with-subnet-routes-til

bradfitz/netstack_port_map

bradfitz/demo_pinger

apenwarr/fixes

apenwarr/relogin

josh/NewIPPort

josh/IPWithPort

bradfitz/integration_tests

josh/opt-dp-wip

bradfitz/ping_notes

bradfitz/dropped_by_filter_logspam

bradfitz/netstack_drop_silent

bradfitz/log_rate_test

bradfitz/issue_1840_rebased_tree

bradfitz/issue_1849_rebased_tree

crawshaw/syno

apenwarr/statefix

apenwarr/statetest

josh/wip/endpoint-serialize

apenwarr/ioslogin

rosszurowski/cli-fix-typo

bradfitz/cli_pretty

bradfitz/win_delete_retry

bradfitz/sleep

naman/netstack-request-logging

naman/ephem-expand-range

bradfitz/macos_progress

bradfitz/ip_of

crawshaw/localapi404

crawshaw/movefiles

crawshaw/socket

crawshaw/cgi

naman/netstack-subnet-routing

josh/wip/create-endpoint-no-public-key

Xe/log-target-registry-key

release-branch/1.6

bradfitz/ipv6_link_local_strip

bradfitz/darwin_gw

Xe/disallow-local-ip-for-exit-node

release-branch/1.4

crawshaw/upjson

bradfitz/proposed_1.4.6

bradfitz/derp_steer

crawshaw/tailscalestatus

Xe/reset-logid-on-logout-login

naman/netstack-incoming

mkramlich/macos-brew2

naman/netstack-outgoing-udp-test

mkramlich/macos-brew

bradfitz/proposed-1.4.5

peske/ifacewatcher

Xe/hello-vr

crawshaw/filchsync

Xe/derphttp-panic-fix

peske/elnotfound

Xe/rel-144-fix-ipv6-broken-in-tests

bradfitz/darwin_creds

josh/longblock

josh/udp-alloc-less

josh/simplify-filch

josh/remove-ipcgetfilter

Xe/envvar-name-TS

Xe/TS-envvar-name

Xe/do-windows-logserver-better

Xe/log-target-flag

crawshaw/ipuint

bradfitz/hello

bradfitz/linux_v6_off

bradfitz/call_me_maybe_eps

bradfitz/api_docs

alexbrainman/use_wg_dns_code

naman/netstack-use-tailscale-ip

josh/debug-TestLikelyHomeRouterIPSyscallExec

noerror-not-notimp

bradfitz/umaskless_permissions

naman/netstack-bump-version

bradfitz/lite_endpoint_update

c22wen/api-docs

bradfitz/grafana_auth_proxy

crawshaw/dnsguid

nix-shell

release-branch/1.2

bradfitz/acl_tags_in_tailscale_status

bradfitz/expiry_spin

josh/no-goroutine-per-udp-read-2

crawshaw/tailcfg

bradfitz/wgengine_monitor_windows_take2

netstat-unsafe

bradfitz/ipn_empty

bradfitz/win_firewall_async

bradfitz/machine_key

apenwarr/faketun

crawshaw/cloner

crawshaw/jsonhandler

c22wen/route-addr

c22wen/magicsock.go

bradfitz/gvisor_netstack

crawshaw/loadtest

dshynkev/dns-autoset

crawshaw/e2etest

bradfitz/win_wpad_pac

release-branch/1.0

bradfitz/linux_default_route_interface

bradfitz/release-branch-1.0

crawshaw/restartlimit

clone

dshynkev/dns-name

dshynkev/dns-refactor

bradfitz/go_vet

crawshaw/tswebextra

crawshaw/pinger2

lzjluzijie/all_proxy

rate-limiting

lzjluzijie/227_http_proxy

crawshaw/rebind

crawshaw/hostinfo

crawshaw/derp-nokeepalives

crawshaw/derptimeout

crawshaw/derpdial2

crawshaw/derpdial

crawshaw/ipn

crawshaw/e2e_test

crawshaw/ipn2

crawshaw/magicsock

crawshaw/magicsock-infping

crawshaw/spray

crawshaw/br1

v1.77.0-pre

v1.76.6

v1.76.3

v1.76.1

v1.76.0

v1.74.1

v1.74.0

v1.72.1

v1.72.0

v1.70.0

v1.68.2

v1.68.1

v1.68.0

v1.66.4

v1.66.3

v1.66.2

v1.66.1

v1.66.0

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v1.64.1

v1.64.0

v1.62.1

v1.62.0

v1.60.1

v1.60.0

v1.58.2

v1.58.1

v1.58.0

v1.44.3

v1.56.1

v1.56.0

v1.54.1

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v1.52.1

v1.52.0

v1.50.1

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v1.48.2

v1.48.1

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v1.46.0

v1.44.2

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v1.42.1

v1.42.0

v1.40.1

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v1.38.4

v1.38.3

v1.38.2

v1.38.1

v1.38.0

v1.36.2

v1.36.1

v1.36.0

v1.34.2

v1.34.1

v1.34.0

v1.32.3

v1.32.2

v1.32.1

v1.32.0

v1.30.2

v1.30.1

v1.30.0

v1.28.0

v1.26.2

v1.26.1

v1.26.0

v1.24.2

v1.24.1

v1.24.0

v1.22.2

v1.22.1

v1.22.0

v1.20.4

v1.20.3

v1.20.2

v1.20.1

v1.20.0

v1.18.2

v1.18.1

v1.18.0

v1.16.2

v1.16.1

v1.16.0

v1.14.6

v1.14.5

v1.14.4

v1.14.3

v1.14.0

v1.12.4

v1.12.3

v1.12.2

v1.12.1

v1.12.0

v1.10.2

v1.10.1

v1.10.0

v1.8.8

v1.8.7

v1.8.6

v1.8.5

v1.8.4

v1.8.3

v1.8.2

v1.8.1

v1.8.0

v1.6.0

v1.4.6

v1.4.5

v1.4.4

v1.4.3

v1.4.2

v1.4.1

v1.4.0

v1.2.10

v1.2.9

v1.2.8

v1.2.7

v1.2.6

v1.2.5

v1.2.3

v1.2.2

v1.2.1

v1.2.0

v1.0.5

v1.0.4

v1.0.3

v1.0.2

v1.0.1

v1.1.0

v1.0.0

v0.100.0

v0.99.1

v0.99.0

v0.98.1

v0.98

v0.98.0

v0.97

v0.96.1

v0.96

coral-gitops

gitops-1.30.0

gitops-1.58.2

nginx-auth-0.1.2

v0.100.0-107

v0.100.0-153

v1.61.0-pre

v1.63.0-pre

v1.65.0-pre

v1.67.0-pre

v1.69.0-pre

v1.71.0-pre

v1.73.0-pre

v1.75.0-pre

History

Brad Fitzpatrick c4d0237e5c tstest/natlab: add dual stack with blackholed IPv4 This reproduces the bug report from https://github.com/tailscale/tailscale/issues/13346 It does not yet fix it. Updates #13346 Change-Id: Ia5af7b0481a64a37efe259c798facdda6d9da618 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
..
nat_test.go	tstest/natlab: add dual stack with blackholed IPv4	3 months ago

Brad Fitzpatrick c4d0237e5c tstest/natlab: add dual stack with blackholed IPv4

This reproduces the bug report from
https://github.com/tailscale/tailscale/issues/13346

It does not yet fix it.

Updates #13346

Change-Id: Ia5af7b0481a64a37efe259c798facdda6d9da618
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

nat_test.go

tstest/natlab: add dual stack with blackholed IPv4