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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2026-05-06 23:21:24 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2026-05-06 23:21:24 +0200 |
| commit | a998407747005ea7e4e0258d96f105c97241e1d3 (patch) | |
| tree | f97e732ce1a3a1750aac0bc332e85599e6a23cbd | |
| parent | ipc: freebsd: add allowed-ip flags support for FreeBSD (diff) | |
| download | wireguard-tools-master.tar.xz wireguard-tools-master.zip | |
Looking at the source [1], it appears that the interface is always the
4th argument, regardless of the family:
C1. if (fam != old_fam) // FALSE
P1. p_sockaddr(params, &addr.u_sa, &mask.u_sa, rtm->rtm_flags,
WID_DST(addr.u_sa.sa_family));
P2. p_sockaddr(params, rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
WID_GW(addr.u_sa.sa_family));
C2. if (params->lflag && (rtm->rtm_addrs & RTA_IFA)) // FALSE
P3. p_flags(rtm->rtm_flags, "%-10.10s ");
C3. if (params->lflag) // FALSE
P4. printf("%*.*s", WID_IF(addr.u_sa.sa_family),
WID_IF(addr.u_sa.sa_family), ifname);
Because C1, C2, and C3 evaluate to false, interface is always in the 4th
argument.
[1] https://github.com/apple-oss-distributions/network_cmds/blob/97e27e6244c16d399bfeb254315ddc5828711c56/netstat.tproj/route.c#L328
Reported-by: Florian Uekermann <florian@uekermann.me>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
| -rwxr-xr-x | src/wg-quick/darwin.bash | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/wg-quick/darwin.bash b/src/wg-quick/darwin.bash index 0e87062..0179afb 100755 --- a/src/wg-quick/darwin.bash +++ b/src/wg-quick/darwin.bash @@ -131,14 +131,14 @@ add_if() { del_routes() { [[ -n $REAL_INTERFACE ]] || return 0 local todelete=( ) destination gateway netif - while read -r destination _ _ _ _ netif _; do + while read -r destination _ _ netif _; do [[ $netif == "$REAL_INTERFACE" ]] && todelete+=( "$destination" ) done < <(netstat -nr -f inet) for destination in "${todelete[@]}"; do cmd route -q -n delete -inet "$destination" >/dev/null || true done todelete=( ) - while read -r destination gateway _ netif; do + while read -r destination gateway _ netif _; do [[ $netif == "$REAL_INTERFACE" || ( $netif == lo* && $gateway == "$REAL_INTERFACE" ) ]] && todelete+=( "$destination" ) done < <(netstat -nr -f inet6) for destination in "${todelete[@]}"; do @@ -177,7 +177,7 @@ set_mtu() { cmd ifconfig "$REAL_INTERFACE" mtu "$MTU" return fi - while read -r destination _ _ _ _ netif _; do + while read -r destination _ _ netif _; do if [[ $destination == default ]]; then defaultif="$netif" break |