Attempting to capture configurations via SNMP/TFTP is resulting in a failure indicating write failed.
Upon investigating further with a tcpdump:
tcpdump -i any -w /tmp/capture.pcap
The capture shows (for TFTP protocol):
TFTP Write Request, File: SCM_0x14124d, Transfer type: octet, blksize=8192
TFTP Error Code, Code: File not found, Message: File not found
The TFTP Server needs to properly be configured to allow writes.
For example if using in.tftpd:
The tftpd.service file needs to include the proper -s /tftpboot directory in the Exec line.
Restart the service once properly configured and captures should start working properly.