Seeing the following error in the log messages and seems to be mostly cosmetic as the BGP neighbor is up and working.
Sep xx 07:12:48 EDT: %BGP-3-NOTIFICATION: sent to neighbor 172.16.1.1 passive 2/8 (no supported AFI/SAFI) 3 bytes 000000
The version of IOS is:
System image file is "disk0:c7600s72033-advipservices-mz.122-33.SRB3.bin"
CISCO7609 (R7000) processor (revision 1.2) with 983008K/65536K bytes of memory.
My thoughts on it was to perform a BGP shutdown for this neighbor, wait a few minutes and then re-enable it back up. If it persists, I was going to open a TAC case. Please feel free to put into your comments/suggestions in the event if somebody has experienced this in the past.
the eBGP peer 172.16.1.1 is configured for multiprotocol BGP and AFI=2 means IPv4 multicast
the message simply states that your side is not configured for speaking on address family IPv4 multicast at least not with this specific BGP peer.
Hope to help