Very weird.

Oddly enough, there was a change in how the parameter was specified around systemd 248 -- but that change predates 22.04. The documentation suggests that it should just keep a service from failing in case the setting can't be set, so it feels like it shouldn't actually change anything here.

sarnold@wopr:/fst/trees/ubuntu/main/s/systemd $ grep -L -- 'net.core.default_qdisc = fq_codel' */sysctl.d/50-default.conf
systemd_204-5ubuntu20.31/sysctl.d/50-default.conf
systemd_204-5ubuntu20/sysctl.d/50-default.conf
sarnold@wopr:/fst/trees/ubuntu/main/s/systemd $ grep -- 'net.core.default_qdisc = fq_codel' */sysctl.d/50-default.conf
systemd_229-4ubuntu21.21/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu21.22/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu21.23/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu21.27/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu21.28/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu21.29/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu21.31/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_229-4ubuntu4/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.19/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.26/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.28/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.29/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.31/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.33/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.34/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.38/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.39/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.40/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.41/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.42/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.43/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.44/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.45/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.46/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.47/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.48/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.49/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.50/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.51/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.52/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.53/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10.56/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_237-3ubuntu10/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_239-7ubuntu10.12/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_239-7ubuntu10.14/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_239-7ubuntu10/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_240-6ubuntu13/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_240-6ubuntu5.4/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_240-6ubuntu5.6/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_240-6ubuntu5.7/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_240-6ubuntu5.8/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_240-6ubuntu5/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_241-7ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.11/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.6/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.7/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.8/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3.9/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_242-7ubuntu3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_243-2ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_243-3ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_244.1-0ubuntu2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_244.2-1ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_244.3-1ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.2-1ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-2ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.10/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.11/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.13/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.14/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.15/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.16/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.17/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.18/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.4/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.5/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.6/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.7/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3.8/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.4-4ubuntu3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.5-2ubuntu2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.5-3ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_245.6-1ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.5-1ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1.1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1.2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1.3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1.4/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1.5/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1.7/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-1ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_246.6-2ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.1-4ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-1ubuntu3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-1ubuntu4/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu3.1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu3.2/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu3.4/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu3.6/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu3.7/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-3ubuntu3/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_247.3-5ubuntu1/sysctl.d/50-default.conf:net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu1/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu2/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu3/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu4/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu8.1/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu8.2/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu8.5/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu8.6/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_248.3-1ubuntu8/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.10-0ubuntu1/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.11-0ubuntu2/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.11-0ubuntu3.1/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.11-0ubuntu3.6/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.11-0ubuntu3/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.11-0ubuntu4/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.5-2ubuntu2/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_249.9-0ubuntu2/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
systemd_251.4-1ubuntu7/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
sarnold@wopr:/fst/trees/ubuntu/main/s/systemd $