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Brad Fitzpatrick 90ba26cea1 net/netcheck: fix crash when IPv6 kinda but not really works ... Looks like on some systems there's an IPv6 address, but then opening a IPv6 UDP socket fails later. Probably some firewall. Tolerate it better and don't crash. To repro: check the "udp6" to something like "udp7" (something that'll fail) and run "go run ./cmd/tailscale netcheck" on a machine with active IPv6. It used to crash and now it doesn't. Fixes #7949 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>		3 years ago
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netcheck.go	net/netcheck: fix crash when IPv6 kinda but not really works	3 years ago
netcheck_test.go	net/netcheck: reenable TestNodeAddrResolve on Windows	3 years ago