Comment 2 for bug 1834213

I can't actually see this module:

$ ls -l /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_*
-rw-r--r-- 1 root root 203014 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack.ko
-rw-r--r-- 1 root root 10518 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_amanda.ko
-rw-r--r-- 1 root root 5070 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_broadcast.ko
-rw-r--r-- 1 root root 26230 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_ftp.ko
-rw-r--r-- 1 root root 100054 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_h323.ko
-rw-r--r-- 1 root root 15934 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_irc.ko
-rw-r--r-- 1 root root 6694 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_netbios_ns.ko
-rw-r--r-- 1 root root 56158 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_netlink.ko
-rw-r--r-- 1 root root 26334 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_pptp.ko
-rw-r--r-- 1 root root 17062 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_proto_gre.ko
-rw-r--r-- 1 root root 13446 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_sane.ko
-rw-r--r-- 1 root root 41318 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_sip.ko
-rw-r--r-- 1 root root 7238 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_snmp.ko
-rw-r--r-- 1 root root 13726 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_conntrack_tftp.ko
-rw-r--r-- 1 root root 5294 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_dup_netdev.ko
-rw-r--r-- 1 root root 10214 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_log_common.ko
-rw-r--r-- 1 root root 6670 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_log_netdev.ko
-rw-r--r-- 1 root root 34838 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat.ko
-rw-r--r-- 1 root root 7054 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat_amanda.ko
-rw-r--r-- 1 root root 9390 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat_ftp.ko
-rw-r--r-- 1 root root 8734 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat_irc.ko
-rw-r--r-- 1 root root 6102 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat_redirect.ko
-rw-r--r-- 1 root root 17438 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat_sip.ko
-rw-r--r-- 1 root root 6022 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_nat_tftp.ko
-rw-r--r-- 1 root root 13662 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_synproxy_core.ko
-rw-r--r-- 1 root root 125414 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_tables.ko
-rw-r--r-- 1 root root 7854 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_tables_inet.ko
-rw-r--r-- 1 root root 9862 May 6 16:59 /lib/modules/4.15.0-50-generic/kernel/net/netfilter/nf_tables_netdev.ko