looking into kernel documentation, I discovered that ebt_ulog (and also its counterpart ipt_ulog (which loads fine) are both obsoleted by NETFILTER_NETLINK_LOG (see below).
BUT, I could not find an alternative netflow probe based on netlink sockets. CONFIG_BRIDGE_EBT_ULOG: This option enables the old bridge-specific "ebt_ulog" implementation which has been obsoleted by the new "nfnetlink_log" code (see CONFIG_NETFILTER_NETLINK_LOG). CONFIG_IP_NF_TARGET_ULOG: This option enables the old IPv4-only "ipt_ULOG" implementationwhich has been obsoleted by the new "nfnetlink_log" code (see CONFIG_NETFILTER_NETLINK_LOG). CONFIG_NETFILTER_NETLINK_LOG: If this option is enabled, the kernel will include support for logging packets via NFNETLINK. This obsoletes the existing ipt_ULOG and ebg_ulog mechanisms, and is also scheduled to replace the old syslog-based ipt_LOG and ip6t_LOG modules. MAtteo -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org