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net/{dnscache,interfaces}: use netaddr.IP.IsPrivate, delete copied code

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-07-26 19:51:18 -07:00
committed by Brad Fitzpatrick
parent dde8e28f00
commit aaf2df7ab1
8 changed files with 13 additions and 65 deletions
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2
net/interfaces/interfaces_linux.go
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@ -72,7 +72,7 @@ func likelyHomeRouterIPLinux() (ret netaddr.IP, ok bool) {
return nil // ignore error, skip line and keep going
}
ip := netaddr.IPv4(byte(ipu32), byte(ipu32>>8), byte(ipu32>>16), byte(ipu32>>24))
if isPrivateIP(ip) {
if ip.IsPrivate() {
ret = ip
}
return nil