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| author | Ondrej Zajicek (work) <santiago@crfreenet.org> | 2017-11-08 14:15:11 +0100 |
|---|---|---|
| committer | Ondrej Zajicek (work) <santiago@crfreenet.org> | 2017-12-07 13:53:42 +0100 |
| commit | 672fb78e1272bb49cc2521176effe75e3cb22460 (patch) | |
| tree | 76ed92b9dbba42e218cb1621f4b13c2afb37b8ab /proto/babel/packets.c | |
| parent | 268dc7c8b3c45412fc8f4b0bae451e51c4c48b31 (diff) | |
Babel: Fix handling of IPv4 retractions
Babel TLV parsing code rejected IPv4 retractions without next-hop,
although next-hop is needed just for regular updates.
Diffstat (limited to 'proto/babel/packets.c')
| -rw-r--r-- | proto/babel/packets.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/proto/babel/packets.c b/proto/babel/packets.c index 6e8d2eb5..8e972db2 100644 --- a/proto/babel/packets.c +++ b/proto/babel/packets.c @@ -593,8 +593,8 @@ babel_read_update(struct babel_tlv *hdr, union babel_msg *m, if (tlv->omitted && !state->def_ip4_prefix_seen) return PARSE_ERROR; - /* Need next hop for v4 routes */ - if (ipa_zero(state->next_hop_ip4)) + /* Update must have next hop, unless it is retraction */ + if (ipa_zero(state->next_hop_ip4) && (msg->metric != BABEL_INFINITY)) return PARSE_ERROR; /* Merge saved prefix and received prefix parts */ |