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net: use port 53 when checking for UDP routes

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Using port 9 is weird and at least once triggered a suspicious
activity alert.

Fixes #67264

Change-Id: If4179f054829c175b9f3a51c3bc2a3ca4afa74b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/584416
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
This commit is contained in:
Ian Lance Taylor 2024-05-08 15:46:40 -07:00 committed by Gopher Robot
parent a878d3dfa0
commit 49eedfb4d0
1 changed files with 1 additions and 1 deletions
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2
src/net/addrselect.go
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@ -42,7 +42,7 @@ func sortByRFC6724withSrcs(addrs []IPAddr, srcs []netip.Addr) {
// number is irrelevant. // number is irrelevant.
func srcAddrs(addrs []IPAddr) []netip.Addr { func srcAddrs(addrs []IPAddr) []netip.Addr {
srcs := make([]netip.Addr, len(addrs)) srcs := make([]netip.Addr, len(addrs))
dst := UDPAddr{Port: 9} dst := UDPAddr{Port: 53}
for i := range addrs { for i := range addrs {
dst.IP = addrs[i].IP dst.IP = addrs[i].IP
dst.Zone = addrs[i].Zone dst.Zone = addrs[i].Zone