slirp: Allow disabling IPv4 or IPv6v2.6.0-rc1

Add ipv4 and ipv6 boolean options, so the user can setup IPv4-only and
IPv6-only network environments.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/ip_input.c b/ip_input.c
index 7326092..cc6de45 100644
--- a/ip_input.c
+++ b/ip_input.c
@@ -77,6 +77,10 @@ void ip_input(struct mbuf *m)
     register struct ip *ip;
     int hlen;
 
+    if (!slirp->in_enabled) {
+        goto bad;
+    }
+
     DEBUG_CALL("ip_input");
     DEBUG_ARG("m = %p", m);
     DEBUG_ARG("m_len = %d", m->m_len);