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plugin/dns64: reject unsupported prefix lengths (#8611)

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jxj
2026-10-08 16:25:27 +08:00
committed by GitHub
parent 311a9915da
commit e886525620
3 changed files with 25 additions and 1 deletions
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4
plugin/dns64/setup.go
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@@ -84,7 +84,9 @@ func parsePrefix(c *caddy.Controller, addr string) (*net.IPNet, error) {
if total != 128 {
return nil, c.Errf("invalid netmask %d IPv6 address: %q", total, pref)
}
if n%8 != 0 || n < 32 || n > 96 {
switch n {
case 32, 40, 48, 56, 64, 96:
default:
return nil, c.Errf("invalid prefix length %q", pref)
}