nsupdate commands queued:
server localhost
zone example.com
update add    c.example.com. 600 IN A 10.10.10.10
update add    c.example.com. 600 IN AAAA fe80::1
update delete c.example.com. IN CNAME foo.example.com.
update add    c.example.com. 300 IN MX 10 mail.example.com.
update add    c.example.com. 300 IN TXT "v=spf1 redirect=mail.example.com"
send
answer

[S]end, [e]dit, send and edit [a]gain, [q]uit: [s]

Answer:
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id:  24821
;; flags: qr; ZONE: 1, PREREQ: 0, UPDATE: 0, ADDITIONAL: 1
;; ZONE SECTION:
;example.com.                IN  SOA

;; TSIG PSEUDOSECTION:
keyname.     0   ANY TSIG    hmac-sha512. ... NOERROR 0

Aug 05 17:05:17 dns.example.com named[293]: client @0x7f25980416a0 ::1#41081/key keyname: signer "keyname" approved
Aug 05 17:05:17 dns.example.com named[293]: client @0x7f25980416a0 ::1#41081/key keyname: updating zone 'example/IN': attempt to add non-CNAME alongside CNAME ignored
Aug 05 17:05:17 dns.example.com named[293]: client @0x7f25980416a0 ::1#41081/key keyname: updating zone 'example/IN': attempt to add non-CNAME alongside CNAME ignored
Aug 05 17:05:17 dns.example.com named[293]: client @0x7f25980416a0 ::1#41081/key keyname: updating zone 'example/IN': deleting an RR at c.example CNAME
Aug 05 17:05:17 dns.example.com named[293]: client @0x7f25980416a0 ::1#41081/key keyname: updating zone 'example/IN': adding an RR at 'c.example' MX 10 mail.example.com.
Aug 05 17:05:17 dns.example.com named[293]: client @0x7f25980416a0 ::1#41081/key keyname: updating zone 'example/IN': adding an RR at 'c.example' TXT "v=spf1 redirect=mail.example.com"
Aug 05 17:05:18 dns.example.com named[293]: zone example/IN: sending notifies (serial 17)