SSH2_MSG_KEX_DH_GEX_GROUP
ssh_dispatch_set(ssh, SSH2_MSG_KEX_DH_GEX_GROUP,
ssh_dispatch_set(ssh, SSH2_MSG_KEX_DH_GEX_GROUP, &kex_protocol_error);
if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_GROUP)) != 0 ||