Files
gluetun/internal/pmtud/icmp/df_linux.go
T
2026-08-05 14:26:21 +00:00

16 lines
364 B
Go

package icmp
import (
"golang.org/x/sys/unix"
)
func setDontFragment(fd uintptr, ipv4 bool) (err error) {
fdInt := int(fd) //nolint:gosec
if ipv4 {
return unix.SetsockoptInt(fdInt, unix.IPPROTO_IP,
unix.IP_MTU_DISCOVER, unix.IP_PMTUDISC_PROBE)
}
return unix.SetsockoptInt(fdInt, unix.IPPROTO_IPV6,
unix.IPV6_MTU_DISCOVER, unix.IPV6_PMTUDISC_PROBE)
}