## VERIFICATION DISCO
- Before the fix:
ubuntu@disco:~$ dpkg -l | grep "ii systemd "
ii systemd 239-7ubuntu10 amd64
system and service manager
#EDNS query
ubuntu@disco:~$ dig +noall +answer testing.irongiantdesign.com @127.0.0.53 | wc
-l
30
#No EDNS query falling back to TCP
ubuntu@disco:~$ dig +noall +answer +noedns testing.irongiantdesign.com
@127.0.0.53 | wc -l
29
#No EDNS query ignoring the truncate flag (stick to UDP only)
ubuntu@disco:~$ dig +noall +answer +noedns +ignore testing.irongiantdesign.com
@127.0.0.53 | wc -l
29
- With the fix:
ubuntu@disco:~$ dpkg -l | grep "ii systemd "
ii systemd 239-7ubuntu15 amd64
system and service manager
#EDNS query
ubuntu@disco:~$ dig +noall +answer testing.irongiantdesign.com @127.0.0.53 | wc
-l
30
#No EDNS query falling back to TCP
ubuntu@disco:~$ dig +noall +answer +noedns testing.irongiantdesign.com
@127.0.0.53 | wc -l
30
#No EDNS query ignoring the truncate flag (stick to UDP only)
ubuntu@disco:~$ dig +noall +answer +noedns +ignore testing.irongiantdesign.com
@127.0.0.53 | wc -l
29
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https://bugs.launchpad.net/bugs/1804487
Title:
systemd-resolved has issues when the answer is over 512 bytes with
EDNS disabled
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