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Fix DHCPv6 "use multicast" response which previously failed

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to set the message type correctly.

Thanks to Petr Menšík for spotting the problem.
This commit is contained in:
Simon Kelley
2023-03-15 21:12:55 +00:00
parent ef5aac95d4
commit 00be8b39e2
1 changed files with 4 additions and 2 deletions
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6
src/rfc3315.c
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@@ -353,7 +353,7 @@ static int dhcp6_no_relay(struct state *state, int msg_type, unsigned char *inbu
put_opt6_short(DHCP6USEMULTI);
put_opt6_string("Use multicast");
end_opt6(o1);
return 1;
goto done;
}
/* match vendor and user class options */
@@ -1277,12 +1277,14 @@ static int dhcp6_no_relay(struct state *state, int msg_type, unsigned char *inbu
}
log_tags(tagif, state->xid);
done:
/* Fill in the message type. Note that we store the offset,
not a direct pointer, since the packet memory may have been
reallocated. */
((unsigned char *)(daemon->outpacket.iov_base))[start_msg] = outmsgtype;
log_tags(tagif, state->xid);
log6_opts(0, state->xid, daemon->outpacket.iov_base + start_opts, daemon->outpacket.iov_base + save_counter(-1));
return 1;