diff --git a/daemon/call.c b/daemon/call.c
index d207bf0e4..c18179638 100644
--- a/daemon/call.c
+++ b/daemon/call.c
@@ -2797,9 +2797,9 @@ static void __call_monologue_init_from_flags(struct call_monologue *ml, struct c
 		for (__auto_type ll = flags->groups_other.head; ll; ll = ll->next)
 			t_queue_push_tail(&ml->groups_other, call_str_dup(ll->data));
 
-		if (t_hash_table_is_set(flags->bundles))
+		if (t_hash_table_is_set(flags->bundles) && flags->bundle_accept)
 			ML_SET(ml, BUNDLE);
-		else
+		else if (flags->bundle_reject)
 			ML_CLEAR(ml, BUNDLE);
 
 		ml->sdp_session_uri = call_str_cpy(&flags->session_uri);
diff --git a/daemon/call_interfaces.c b/daemon/call_interfaces.c
index 277edd0c2..72c0e383a 100644
--- a/daemon/call_interfaces.c
+++ b/daemon/call_interfaces.c
@@ -853,6 +853,7 @@ static void call_ng_flags_bundle(str *s, unsigned int idx, helper_arg arg) {
 			out->bundle_reject = true;
 			break;
 		case CSH_LOOKUP("require"):
+			out->bundle_offer = true;
 			out->bundle_require = true;
 			break;
 		default:
diff --git a/t/auto-daemon-tests-bundle.pl b/t/auto-daemon-tests-bundle.pl
index 184bd277c..3321ff1da 100755
--- a/t/auto-daemon-tests-bundle.pl
+++ b/t/auto-daemon-tests-bundle.pl
@@ -216,10 +216,12 @@ rcv($sock_b, $port_d, rtpm(105, 7000, 9000, 0x8741, "\x22" x 800));
 # mix up bundle ports
 
 snd($sock_a, $port_d,  rtp(0, 2000, 6000, 0x1234, "\x44" x 160));
-rcv($sock_c, $port_a, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv($sock_d, $port_b, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv_no($sock_c);
 
 snd($sock_b, $port_c,  rtp(105, 3000, 4000, 0x6321, "\x33" x 800));
-rcv($sock_d, $port_b, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv($sock_c, $port_a, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv_no($sock_d);
 
 
 
@@ -322,11 +324,232 @@ rcv($sock_a, $port_d, rtpm(105, 7000, 9000, 0x8741, "\x22" x 800));
 
 # mix up bundle ports
 
+snd($sock_a, $port_d,  rtp(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv($sock_d, $port_b, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv_no($sock_c);
+
+snd($sock_a, $port_c,  rtp(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv($sock_c, $port_a, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv_no($sock_d);
+
+
+
+
+($sock_a, $sock_b, $sock_c, $sock_d) =
+	new_call([qw(198.51.100.14 6200)],
+		[qw(198.51.100.14 6202)],
+		[qw(198.51.100.14 6204)],
+		[qw(198.51.100.14 6206)]);
+
+($port_a, undef, $port_b) = offer('optional bundle offer w bundle-accept',
+	{ bundle => ['accept'] }, <<SDP);
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+a=group:BUNDLE a v
+m=audio 6200 RTP/AVP 0
+c=IN IP4 198.51.100.14
+a=sendrecv
+a=mid:a
+m=video 6202 RTP/AVP 105
+c=IN IP4 198.51.100.14
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=mid:v
+----------------------------------
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+m=audio PORT RTP/AVP 0
+c=IN IP4 203.0.113.1
+a=mid:a
+a=rtpmap:0 PCMU/8000
+a=sendrecv
+a=rtcp:PORT
+m=video PORT RTP/AVP 105
+c=IN IP4 203.0.113.1
+a=mid:v
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=rtcp:PORT
+SDP
+
+($port_c, undef, $port_d) = answer('optional bundle offer w bundle-accept',
+	{ }, <<SDP);
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+m=audio 6204 RTP/AVP 0
+c=IN IP4 198.51.100.14
+a=sendrecv
+a=mid:a
+m=video 6206 RTP/AVP 105
+c=IN IP4 198.51.100.14
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=mid:v
+----------------------------------
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+m=audio PORT RTP/AVP 0
+c=IN IP4 203.0.113.1
+a=mid:a
+a=rtpmap:0 PCMU/8000
+a=sendrecv
+a=rtcp:PORT
+m=video PORT RTP/AVP 105
+c=IN IP4 203.0.113.1
+a=mid:v
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=rtcp:PORT
+SDP
+
+isnt($port_a, $port_b, 'different ports');
+isnt($port_a, $port_c, 'different ports');
+isnt($port_a, $port_d, 'different ports');
+isnt($port_b, $port_c, 'different ports');
+isnt($port_b, $port_d, 'different ports');
+isnt($port_c, $port_d, 'different ports');
+
+snd($sock_a, $port_c,  rtp(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv($sock_c, $port_a, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+
+snd($sock_c, $port_a,  rtp(0, 6000, 8000, 0x5678, "\x77" x 160));
+rcv($sock_a, $port_c, rtpm(0, 6000, 8000, 0x5678, "\x77" x 160));
+rcv_no($sock_b);
+
+snd($sock_b, $port_d,  rtp(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv($sock_d, $port_b, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+
+snd($sock_d, $port_b,  rtp(105, 7000, 9000, 0x8741, "\x22" x 800));
+rcv($sock_b, $port_d, rtpm(105, 7000, 9000, 0x8741, "\x22" x 800)); # XXX wrong port
+rcv_no($sock_a);
+
+
+# mix up bundle ports
+
+snd($sock_a, $port_d,  rtp(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv($sock_c, $port_a, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv_no($sock_d);
+
+snd($sock_b, $port_c,  rtp(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv($sock_d, $port_b, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv_no($sock_c);
+
+
+
+
+undef($sock_b);
+
+
+($sock_a, $sock_c, $sock_d) =
+	new_call([qw(198.51.100.14 6208)],
+		[qw(198.51.100.14 6210)],
+		[qw(198.51.100.14 6212)]);
+
+($port_a, undef, $port_b) = offer('same-port bundle offer w bundle-accept',
+	{ bundle => ['accept'] }, <<SDP);
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+a=group:BUNDLE a v
+m=audio 6208 RTP/AVP 0
+c=IN IP4 198.51.100.14
+a=sendrecv
+a=mid:a
+m=video 6208 RTP/AVP 105
+c=IN IP4 198.51.100.14
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=mid:v
+----------------------------------
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+m=audio PORT RTP/AVP 0
+c=IN IP4 203.0.113.1
+a=mid:a
+a=rtpmap:0 PCMU/8000
+a=sendrecv
+a=rtcp:PORT
+m=video PORT RTP/AVP 105
+c=IN IP4 203.0.113.1
+a=mid:v
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=rtcp:PORT
+SDP
+
+($port_c, undef, $port_d) = answer('same-port bundle offer w bundle-accept',
+	{ }, <<SDP);
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+m=audio 6210 RTP/AVP 0
+c=IN IP4 198.51.100.14
+a=sendrecv
+a=mid:a
+m=video 6212 RTP/AVP 105
+c=IN IP4 198.51.100.14
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=mid:v
+----------------------------------
+v=0
+o=- 1545997027 1 IN IP4 198.51.100.1
+s=tester
+t=0 0
+m=audio PORT RTP/AVP 0
+c=IN IP4 203.0.113.1
+a=mid:a
+a=rtpmap:0 PCMU/8000
+a=sendrecv
+a=rtcp:PORT
+m=video PORT RTP/AVP 105
+c=IN IP4 203.0.113.1
+a=mid:v
+a=rtpmap:105 H264/90000
+a=sendrecv
+a=rtcp:PORT
+SDP
+
+isnt($port_a, $port_b, 'different ports');
+isnt($port_a, $port_c, 'different ports');
+isnt($port_a, $port_d, 'different ports');
+isnt($port_b, $port_c, 'different ports');
+isnt($port_b, $port_d, 'different ports');
+isnt($port_c, $port_d, 'different ports');
+
+snd($sock_a, $port_c,  rtp(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv($sock_c, $port_a, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+
+snd($sock_c, $port_a,  rtp(0, 6000, 8000, 0x5678, "\x77" x 160));
+rcv($sock_a, $port_c, rtpm(0, 6000, 8000, 0x5678, "\x77" x 160));
+
+snd($sock_a, $port_d,  rtp(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv($sock_d, $port_b, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+
+snd($sock_d, $port_b,  rtp(105, 7000, 9000, 0x8741, "\x22" x 800));
+rcv($sock_a, $port_d, rtpm(105, 7000, 9000, 0x8741, "\x22" x 800));
+
+# mix up bundle ports
+
 snd($sock_a, $port_d,  rtp(0, 2000, 6000, 0x1234, "\x44" x 160));
 rcv($sock_c, $port_a, rtpm(0, 2000, 6000, 0x1234, "\x44" x 160));
+rcv_no($sock_d);
 
 snd($sock_a, $port_c,  rtp(105, 3000, 4000, 0x6321, "\x33" x 800));
 rcv($sock_d, $port_b, rtpm(105, 3000, 4000, 0x6321, "\x33" x 800));
+rcv_no($sock_c);