[FROG] BGPD advertises IPv4 prefixes when only IPv6 peer is up

Good afternoon (o; New to FRR running two VM Debian 12 instances with FRR 10.4.0 for testing BGP setups. On each side I have v4 and v6 peers configured, but v4 is in admin shut state. But I see IPv4 prefix being advertised over the v6 BGP session. Is that a normal behaviour in FRR? thanks in advance richard