The branch main has been updated by glebius:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=a3da8329c509a002908602175cd7507fc10d4f6c

commit a3da8329c509a002908602175cd7507fc10d4f6c
Author:     Gleb Smirnoff <[email protected]>
AuthorDate: 2022-10-17 18:39:40 +0000
Commit:     Gleb Smirnoff <[email protected]>
CommitDate: 2022-10-17 18:39:40 +0000

    carp: fix regression panic from ccd69bd573f
    
    Reported & tested by:   Oleg Ginzburg <olevole olevole.ru>
    Fixes:                  ccd69bd573f185308e7652190ff64b50f7fba381
---
 sys/netinet6/nd6_nbr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c
index 7bca7fa59ac7..cd7119c9ccbc 100644
--- a/sys/netinet6/nd6_nbr.c
+++ b/sys/netinet6/nd6_nbr.c
@@ -514,7 +514,8 @@ nd6_ns_output_fib(struct ifnet *ifp, const struct in6_addr 
*saddr6,
                         * Do not send NS for CARP address if we are not
                         * the CARP master.
                         */
-                       if (ifa != NULL && !(*carp_master_p)(ifa)) {
+                       if (ifa != NULL && ifa->ifa_carp != NULL &&
+                           !(*carp_master_p)(ifa)) {
                                log(LOG_DEBUG,
                                    "nd6_ns_output: NS from BACKUP CARP address 
%s\n",
                                    ip6_sprintf(ip6buf, &ip6->ip6_src));

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