diff options
Diffstat (limited to 'src/gb/gprs_ns2_frgre.c')
| -rw-r--r-- | src/gb/gprs_ns2_frgre.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/gb/gprs_ns2_frgre.c b/src/gb/gprs_ns2_frgre.c index 853375d0..f163704e 100644 --- a/src/gb/gprs_ns2_frgre.c +++ b/src/gb/gprs_ns2_frgre.c @@ -339,7 +339,11 @@ static struct msgb *read_nsfrgre_msg(struct osmo_fd *bfd, int *error, break; } - greh = (struct gre_hdr *) (msg->data + iph->ihl*4); + if (iph) + greh = (struct gre_hdr *) (msg->data + iph->ihl*4); + else + greh = (struct gre_hdr *) (msg->data + sizeof(struct ip6_hdr)); + if (greh->flags) { LOGBIND(bind, LOGL_NOTICE, "Unknown GRE flags 0x%04x\n", osmo_ntohs(greh->flags)); } |