For reference, ubuntu-server kernel:
$ uname -r 2.6.32-17-server $ grep MATCH_RECENT /boot/config-$(uname -r) CONFIG_NETFILTER_XT_MATCH_RECENT=m # CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT is not set
So, in "normal" ubuntu-server kernel, this is set.
For reference, ubuntu-server kernel:
$ uname -r $(uname -r) NETFILTER_ XT_MATCH_ RECENT= m NETFILTER_ XT_MATCH_ RECENT_ PROC_COMPAT is not set
2.6.32-17-server
$ grep MATCH_RECENT /boot/config-
CONFIG_
# CONFIG_
So, in "normal" ubuntu-server kernel, this is set.