I am uploading a NMU once again to fix this. The debdiff is attached.
diff -Nru packeth-2.1/debian/changelog packeth-2.1/debian/changelog
--- packeth-2.1/debian/changelog 2023-09-20 17:54:49.000000000 +0000
+++ packeth-2.1/debian/changelog 2023-10-01 12:56:11.000000000 +0000
@@ -1,3 +1,10 @@
+packeth (2.1-0.2) unstable; urgency=medium
+
+ * Non-maintainer upload
+ * Drop unused code with x86 assembly (Closes: #1053312)
+
+ -- Bastian Germann <b...@debian.org> Sun, 01 Oct 2023 12:56:11 +0000
+
packeth (2.1-0.1) unstable; urgency=medium
* Non-maintainer upload
diff -Nru packeth-2.1/debian/patches/04-no-asm.patch
packeth-2.1/debian/patches/04-no-asm.patch
--- packeth-2.1/debian/patches/04-no-asm.patch 1970-01-01 00:00:00.000000000
+0000
+++ packeth-2.1/debian/patches/04-no-asm.patch 2023-10-01 12:56:11.000000000
+0000
@@ -0,0 +1,182 @@
+Description: Drop unused code with x86 assembly
+Author: Bastian Germann <b...@debian.org>
+---
+--- packeth-2.1.orig/cli/cli_send.c
++++ packeth-2.1/cli/cli_send.c
+@@ -1729,36 +1728,6 @@ void onexit(int signum)
+ }
+
+
/*------------------------------------------------------------------------------*/
+-inline __sum16
+-ip_fast_csum(const void *iph, unsigned int ihl)
+-{
+- unsigned int sum;
+-
+- asm(" movl (%1), %0\n"
+- " subl $4, %2\n"
+- " jbe 2f\n"
+- " addl 4(%1), %0\n"
+- " adcl 8(%1), %0\n"
+- " adcl 12(%1), %0\n"
+- "1: adcl 16(%1), %0\n"
+- " lea 4(%1), %1\n"
+- " decl %2\n"
+- " jne 1b\n"
+- " adcl $0, %0\n"
+- " movl %0, %2\n"
+- " shrl $16, %0\n"
+- " addw %w2, %w0\n"
+- " adcl $0, %0\n"
+- " notl %0\n"
+- "2:"
+- /* Since the input registers which are loaded with iph and ih
+- are modified, we must also specify them as outputs, or gcc
+- will assume they contain their original values. */
+- : "=r" (sum), "=r" (iph), "=r" (ihl)
+- : "1" (iph), "2" (ihl)
+- : "memory");
+- return (__sum16)sum;
+-}
+
/*------------------------------------------------------------------------------*/
+ uint16_t
+ TCPChecksum(uint16_t* buf1, int buf1len, uint16_t* buf2, int buf2len)
+@@ -1808,139 +1777,6 @@ MyRandom(uint64_t *seed)
+ return (uint32_t)(*seed >> 32);
+ }
+
/*------------------------------------------------------------------------------*/
+-char *
+-build_packet(char *buffer, int pktsize, int tot_rules, int *rule_idx,
uint64_t *seed, int attack)
+-{
+- struct ether_header *ethh;
+- struct iphdr *iph;
+- struct tcphdr *tcph;
+- uint16_t tot_len;
+- static struct
+- {
+- uint32_t src_addr;
+- uint32_t dst_addr;
+- uint8_t zero;
+- uint8_t protocol;
+- uint16_t len;
+- } __attribute__ ((aligned (__WORDSIZE))) pseudo_header = {
+- IP_SRC_ADDR, IP_DST_ADDR, 0, IPPROTO_TCP, 0,
+- };
+- static u_int8_t ether_dhost[ETH_ALEN] = MAC_DST_ADDR;
+- static u_int8_t ether_shost[ETH_ALEN] = MAC_SRC_ADDR;
+- static uint64_t attack_meter = 0;
+- uint64_t attack_index;
+- uint8_t attack_packet = 0;
+-
+- /* build ether header (14B) */
+- ethh = (struct ether_header *)buffer;
+- memcpy(ethh->ether_dhost, ether_dhost, ETH_ALEN);
+- memcpy(ethh->ether_shost, ether_shost, ETH_ALEN);
+- ethh->ether_type = htons(ETHERTYPE_IP);
+-
+- tot_len = pktsize - sizeof(struct ether_header);
+-
+- /* build ip header (20B) */
+- iph = (struct iphdr *)(ethh + 1);
+- memset(iph, 0, sizeof (struct iphdr));
+- iph->ihl = (unsigned int)(sizeof(struct iphdr)>>2);
+- iph->version = 4;
+- iph->ttl = 32;
+- iph->protocol = IPPROTO_TCP;
+- /* in nbo */
+- iph->saddr = IP_SRC_ADDR;
+- iph->daddr = IP_DST_ADDR;
+- iph->tot_len = htons(tot_len);
+- iph->check = ip_fast_csum(iph, iph->ihl);
+-
+- /* build tcp header (20B) */
+- tcph = (struct tcphdr *)((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr));
+- memset(tcph, 0, sizeof (struct tcphdr));
+- tcph->source = TCP_SRC_PORT;
+- tcph->dest = TCP_DST_PORT;
+- tcph->seq = MyRandom(seed);
+- tcph->ack_seq = MyRandom(seed);
+- tcph->doff = (sizeof(struct tcphdr)>>2);
+- tcph->res1 = 0;
+- tcph->res2 = 0;
+- tcph->urg = 0;
+- tcph->ack = 1;
+- tcph->psh = 0;
+- tcph->rst = 0;
+- tcph->syn = 0;
+- tcph->fin = 0;
+- tcph->window = htons(5840);
+-
+- attack_index = attack_meter & (4 - 1);
+- switch (attack) {
+- case 0:
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- null_payload, tot_len + sizeof(struct ether_header));
+- break;
+- case 1:
+- if (attack_index == 0) {
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- g_content[*rule_idx], tot_len + sizeof(struct
ether_header));
+- attack_packet = 1;
+- }
+- else
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- null_payload, tot_len + sizeof(struct ether_header));
+- break;
+- case 2:
+- if (attack_index == 0 || attack_index == 2) {
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- g_content[*rule_idx], tot_len + sizeof(struct
ether_header));
+- attack_packet = 1;
+- }
+- else
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- null_payload, tot_len + sizeof(struct ether_header));
+- break;
+- case 3:
+- if (attack_index != 0) {
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- g_content[*rule_idx], tot_len + sizeof(struct
ether_header));
+- attack_packet = 1;
+- }
+- else
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- null_payload, tot_len + sizeof(struct ether_header));
+- break;
+- case 4:
+- /* build payload */
+- memcpy((char *)buffer + sizeof(struct ether_header) +
+- sizeof(struct iphdr) + sizeof(struct tcphdr),
+- g_content[*rule_idx], tot_len + sizeof(struct ether_header));
+- attack_packet = 1;
+- break;
+- default:
+- fprintf(stderr, "Control can never come here!\n");
+- exit(EXIT_FAILURE);
+- }
+-
+- /* update rule offset */
+- if (attack_packet)
+- *rule_idx = (*rule_idx + 1) % tot_rules;
+-
+- /* update checksum */
+- tot_len -= sizeof(struct iphdr);
+- pseudo_header.len = htons(tot_len);
+- tcph->check = TCPChecksum((uint16_t *) &pseudo_header,
+- sizeof(pseudo_header), (uint16_t *)tcph,
+- tot_len);
+-
+- attack_meter++;
+-
+- return buffer;
+-}
+
/*------------------------------------------------------------------------------*/
+ /* IDS mode */
+
diff -Nru packeth-2.1/debian/patches/series packeth-2.1/debian/patches/series
--- packeth-2.1/debian/patches/series 2023-09-20 17:54:49.000000000 +0000
+++ packeth-2.1/debian/patches/series 2023-10-01 12:56:11.000000000 +0000
@@ -1,3 +1,4 @@
01-fix_warnings.patch
02-fix_typo.patch
03-no-werror.patch
+04-no-asm.patch
