git: 8ea4e92945d3 - main - net: don't panic on ifconfig pfsync0 mtu 9000

The branch main has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=8ea4e92945d312bd5d19714e070f695230037660

commit 8ea4e92945d312bd5d19714e070f695230037660
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2026-08-07 12:39:59 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2026-08-08 09:02:34 +0000

    net: don't panic on ifconfig pfsync0 mtu 9000
    
    pfsync interfaces do not have ifp->if_inet6 set, so when we update the
    MTU for those interfaces we panicked.
    
    Add an explicit check for this. This should be temporary, until pfsync
    is no longer a struct ifnet (as we've already done for pflog).
    
    Reviewed by:    glebius
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D58701
---
 sys/net/route.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/net/route.c b/sys/net/route.c
index cbe84ba5fba9..2034c298d273 100644
--- a/sys/net/route.c
+++ b/sys/net/route.c
@@ -516,7 +516,9 @@ rt_updatemtu(struct ifnet *ifp)
 #ifdef INET6
 	uint32_t in6mtu;
 
-	in6mtu = in6_ifmtu(ifp);
+	/* For IFT_PFSYNC */
+	if (ifp->if_inet6 != NULL)
+		in6mtu = in6_ifmtu(ifp);
 #endif
 
 	for (u_int j = 0; j < rt_numfibs; j++) {