[Bug 273557] Regression preventing bhyve from running inside a jail without IP after f74147e26999838e03a522bf59ea33bef470d356) breaks support for jailing bhyve with IPv4 and IPv6 disabled. Patch included.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273557

Bjoern A. Zeeb <bz@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|Open                        |In Progress

--- Comment #4 from Bjoern A. Zeeb <bz@FreeBSD.org> ---
Untested but can you try:

{{{
diff --git usr.sbin/bhyve/net_backends.c usr.sbin/bhyve/net_backends.c
index fa7cd9c81f46..9b4ca9e42c99 100644
--- usr.sbin/bhyve/net_backends.c
+++ usr.sbin/bhyve/net_backends.c
@@ -270,21 +270,22 @@ tap_init(struct net_backend *be, const char *devname,
                s = socket(pf_list[i], SOCK_DGRAM, 0);
        if (s == -1) {
                WPRINTF(("Could open socket"));
-               goto error;
+               goto skip;
        }

        if (ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) {
                (void)close(s);
                WPRINTF(("Could not get interface flags"));
-               goto error;
+               goto skip;
        }
        ifrq.ifr_flags |= IFF_UP;
        if (ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) {
                (void)close(s);
                WPRINTF(("Could not set interface flags"));
-               goto error;
+               goto skip;
        }
        (void)close(s);
+skip:
 #endif

 #ifndef WITHOUT_CAPSICUM
}}}

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