Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> wrote: > On Wed, Jun 22, 2022 at 09:24:25AM -0400, Kiernan George wrote: > > This is the relevant line where I build my header: > > nlh = nftnl_rule_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch), > > NFT_MSG_NEWRULE, family, NLM_F_APPEND | NLM_F_EXCL | NLM_F_CREATE | > > NLM_F_ECHO | NLM_F_ACK, seq++); > > > > If I remove NLM_F_ECHO, it fixes my issue, but I would prefer to keep > > this unless there is a better way to get the created rule's handle. I > > also set the handle directly: > > mnl_attr_put_u64(nlh, NFTNL_RULE_POSITION, htobe64(handle)); > > Makes no sense. Flags are irrelevant for the ABI breakage you are > reporting. Send us a reproducer. Probably corrupted or too-small receive buffer w. garbage fed into netlink parser. Impossible to say without reproducer.
