Hi Benjamin, > I think the actually version is 5.0.3-4+deb10u3!? I had this error with > Debian Buster some Days ago.
You're absolutely right: I was testing this on stretch (not buster) by mistake -- my apologies. However, I still get the same "ERR syntax error" when I run: $ redis-cli set "2a02:908:531:e6e0:42b0:76ff:fea4:d7cb, 162.158.93.15" "1" EX 15 $ redis-cli set "2a02:908:531:e6e0:42b0:76ff:fea4:d7cb, 162.158.93.15" "2" KEEPTTL ... on both 5:5.0.3-4+deb10u2 and 5:5.0.3-4+deb10u3. Regards, -- ,''`. : :' : Chris Lamb `. `'` la...@debian.org 🍥 chris-lamb.co.uk `-