diff --git a/abis/linux/in.h b/abis/linux/in.h
index 39f7d88cc..c38c268da 100644
--- a/abis/linux/in.h
+++ b/abis/linux/in.h
@@ -148,6 +148,7 @@ struct group_source_req {
 #define IP_HDRINCL 3
 #define IP_OPTIONS 4
 #define IP_RECVOPTS 6
+#define IP_RETOPTS 7
 #define IP_PKTINFO 8
 #define IP_PKTOPTIONS 9
 #define IP_MTU_DISCOVER 10
@@ -166,12 +167,14 @@ struct group_source_req {
 #define IP_UNICAST_IF 50
 
 #define IPV6_2292PKTOPTIONS 6
+#define IPV6_2292HOPLIMIT 8
 #define IPV6_UNICAST_HOPS 16
 #define IPV6_MULTICAST_IF 17
 #define IPV6_MULTICAST_HOPS 18
 #define IPV6_MULTICAST_LOOP 19
 #define IPV6_JOIN_GROUP 20
 #define IPV6_LEAVE_GROUP 21
+#define IPV6_MTU_DISCOVER 23
 #define IPV6_MTU 24
 #define IPV6_RECVERR 25
 #define IPV6_V6ONLY 26
@@ -186,6 +189,13 @@ struct group_source_req {
 #define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
 #define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
 
+#define IPV6_PMTUDISC_DONT 0
+#define IPV6_PMTUDISC_WANT 1
+#define IPV6_PMTUDISC_DO 2
+#define IPV6_PMTUDISC_PROBE 3
+#define IPV6_PMTUDISC_INTERFACE 4
+#define IPV6_PMTUDISC_OMIT 5
+
 #define IP_PMTUDISC_DONT 0
 #define IP_PMTUDISC_WANT 1
 #define IP_PMTUDISC_DO 2
diff --git a/abis/linux/ioctls.h b/abis/linux/ioctls.h
index 4d4a2a3be..f3606a321 100644
--- a/abis/linux/ioctls.h
+++ b/abis/linux/ioctls.h
@@ -5,6 +5,7 @@
 #define TIOCNXCL 0x540D
 
 #define SIOCPROTOPRIVATE 0x89E0
+#define SIOCGSTAMP 0x8906
 #define SIOCGIFNAME 0x8910
 #define SIOCGIFCONF 0x8912
 #define SIOCGIFFLAGS 0x8913
diff --git a/options/glibc/generic/resolv.cpp b/options/glibc/generic/resolv.cpp
index 7c0723ed6..269977744 100644
--- a/options/glibc/generic/resolv.cpp
+++ b/options/glibc/generic/resolv.cpp
@@ -28,6 +28,11 @@ void res_nclose(res_state) {
 	return;
 }
 
+int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
 /* This is completely unused, and exists purely to satisfy broken apps. */
 
 struct __res_state *__res_state() {
diff --git a/options/glibc/include/resolv.h b/options/glibc/include/resolv.h
index cb97c9b81..05176fd08 100644
--- a/options/glibc/include/resolv.h
+++ b/options/glibc/include/resolv.h
@@ -31,6 +31,8 @@ int res_query(const char *__dname, int __class, int __type,
 
 int res_init(void);
 
+int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **);
+
 #endif /* !__MLIBC_ABI_ONLY */
 
 /* From musl: Unused; purely for broken apps
diff --git a/options/posix/include/netinet/icmp6.h b/options/posix/include/netinet/icmp6.h
index f2b9c1ee0..5251bbdd1 100644
--- a/options/posix/include/netinet/icmp6.h
+++ b/options/posix/include/netinet/icmp6.h
@@ -15,6 +15,11 @@ extern "C" {
 
 #define ICMP6_FILTER 1
 
+#define ICMP6_DST_UNREACH 1
+#define ICMP6_PACKET_TOO_BIG 2
+#define ICMP6_TIME_EXCEEDED 3
+#define ICMP6_PARAM_PROB 4
+
 #define ICMP6_FILTER_BLOCK 1
 #define ICMP6_FILTER_PASS 2
 #define ICMP6_FILTER_BLOCKOTHERS 3
@@ -22,6 +27,23 @@ extern "C" {
 #define ICMP6_ECHO_REQUEST 128
 #define ICMP6_ECHO_REPLY 129
 
+#define MLD_LISTENER_QUERY 130
+#define MLD_LISTENER_REPORT 131
+#define MLD_LISTENER_REDUCTION 132
+
+#define ICMP6_DST_UNREACH_NOROUTE 0
+#define ICMP6_DST_UNREACH_ADMIN 1
+#define ICMP6_DST_UNREACH_BEYONDSCOPE 2
+#define ICMP6_DST_UNREACH_ADDR 3
+#define ICMP6_DST_UNREACH_NOPORT 4
+
+#define ICMP6_TIME_EXCEED_TRANSIT 0
+#define ICMP6_TIME_EXCEED_REASSEMBLY 1
+
+#define ICMP6_PARAMPROB_HEADER 0
+#define ICMP6_PARAMPROB_NEXTHEADER 1
+#define ICMP6_PARAMPROB_OPTION 2
+
 struct icmp6_filter {
 	uint32_t icmp6_filt[8];
 };
diff --git a/options/posix/include/netinet/ip.h b/options/posix/include/netinet/ip.h
index 6c416b54a..cb7c06ccc 100644
--- a/options/posix/include/netinet/ip.h
+++ b/options/posix/include/netinet/ip.h
@@ -21,6 +21,47 @@ extern "C" {
 #define IPTOS_CLASS_CS6 0xC0
 #define IPTOS_DSCP_EF 0xB8
 
+#define IPOPT_COPY 0x80
+#define IPOPT_CLASS_MASK 0x60
+#define IPOPT_NUMBER_MASK 0x1f
+
+#define IPOPT_COPIED(o) ((o) & IPOPT_COPY)
+#define IPOPT_CLASS(o) ((o) & IPOPT_CLASS_MASK)
+#define IPOPT_NUMBER(o) ((o) & IPOPT_NUMBER_MASK)
+
+#define IPOPT_CONTROL 0x00
+#define IPOPT_RESERVED1 0x20
+#define IPOPT_DEBMEAS 0x40
+#define IPOPT_MEASUREMENT IPOPT_DEBMEAS
+#define IPOPT_RESERVED2 0x60
+
+#define IPOPT_EOL 0
+#define IPOPT_END IPOPT_EOL
+#define IPOPT_NOP 1
+#define IPOPT_NOOP IPOPT_NOP
+
+#define IPOPT_RR 7
+#define IPOPT_TS 68
+#define IPOPT_TIMESTAMP IPOPT_TS
+#define IPOPT_SECURITY 130
+#define IPOPT_SEC IPOPT_SECURITY
+#define IPOPT_LSRR 131
+#define IPOPT_SATID 136
+#define IPOPT_SID IPOPT_SATID
+#define IPOPT_SSRR 137
+#define IPOPT_RA 148
+
+#define IPOPT_OPTVAL 0
+#define IPOPT_OLEN 1
+#define IPOPT_OFFSET 2
+#define IPOPT_MINOFF 4
+
+#define MAX_IPOPTLEN 40
+
+#define IPOPT_TS_TSONLY 0
+#define IPOPT_TS_TSANDADDR 1
+#define IPOPT_TS_PRESPEC 3
+
 #define IPDEFTTL 64
 
 struct ip {
diff --git a/options/posix/include/netinet/ip6.h b/options/posix/include/netinet/ip6.h
index e097acae3..268f8a2fa 100644
--- a/options/posix/include/netinet/ip6.h
+++ b/options/posix/include/netinet/ip6.h
@@ -21,6 +21,8 @@ struct ip6_hdr {
 	struct in6_addr ip6_dst;
 };
 
+#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/options/posix/include/netinet/ip_icmp.h b/options/posix/include/netinet/ip_icmp.h
index efffda1e9..c5fecd1b9 100644
--- a/options/posix/include/netinet/ip_icmp.h
+++ b/options/posix/include/netinet/ip_icmp.h
@@ -10,8 +10,64 @@ extern "C" {
 #include <netinet/in.h>
 #include <netinet/ip.h>
 
+struct icmphdr {
+	uint8_t type;
+	uint8_t code;
+	uint16_t checksum;
+	union {
+		struct {
+			uint16_t id;
+			uint16_t sequence;
+		} echo;
+		uint32_t gateway;
+		struct {
+			uint16_t __unused;
+			uint16_t mtu;
+		} frag;
+		uint8_t reserved[4];
+	} un;
+};
+
 #define ICMP_ECHOREPLY 0
+#define ICMP_DEST_UNREACH 3
+#define ICMP_SOURCE_QUENCH 4
+#define ICMP_REDIRECT 5
 #define ICMP_ECHO 8
+#define ICMP_TIME_EXCEEDED 11
+#define ICMP_PARAMETERPROB 12
+#define ICMP_TIMESTAMP 13
+#define ICMP_TIMESTAMPREPLY 14
+#define ICMP_INFO_REQUEST 15
+#define ICMP_INFO_REPLY 16
+#define ICMP_ADDRESS 17
+#define ICMP_ADDRESSREPLY 18
+
+#define ICMP_NET_UNREACH 0
+#define ICMP_HOST_UNREACH 1
+#define ICMP_PROT_UNREACH 2
+#define ICMP_PORT_UNREACH 3
+#define ICMP_FRAG_NEEDED 4
+#define ICMP_SR_FAILED 5
+#define ICMP_NET_UNKNOWN 6
+#define ICMP_HOST_UNKNOWN 7
+#define ICMP_HOST_ISOLATED 8
+#define ICMP_NET_ANO 9
+#define ICMP_HOST_ANO 10
+#define ICMP_NET_UNR_TOS 11
+#define ICMP_HOST_UNR_TOS 12
+#define ICMP_PKT_FILTERED 13
+#define ICMP_PREC_VIOLATION 14
+#define ICMP_PREC_CUTOFF 15
+#define NR_ICMP_UNREACH 15
+
+#define ICMP_REDIR_NET 0
+#define ICMP_REDIR_HOST 1
+#define ICMP_REDIR_NETTOS 2
+#define ICMP_REDIR_HOSTTOS 3
+
+#define ICMP_EXC_TTL 0
+#define ICMP_EXC_FRAGTIME 1
+
 #define ICMP_ADVLENMIN (8 + sizeof(struct ip) + 8)
 
 struct icmp_ra_addr {