diff --git a/unix/types_solaris.go b/unix/types_solaris.go
index 2b716f93..d713f09e 100644
--- a/unix/types_solaris.go
+++ b/unix/types_solaris.go
@@ -158,6 +158,8 @@ type Msghdr C.struct_msghdr
 
 type Cmsghdr C.struct_cmsghdr
 
+type Inet4Pktinfo C.struct_in_pktinfo
+
 type Inet6Pktinfo C.struct_in6_pktinfo
 
 type IPv6MTUInfo C.struct_ip6_mtuinfo
@@ -175,6 +177,7 @@ const (
 	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
 	SizeofMsghdr           = C.sizeof_struct_msghdr
 	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet4Pktinfo     = C.sizeof_struct_in_pktinfo
 	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
 	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
 	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
diff --git a/unix/ztypes_solaris_amd64.go b/unix/ztypes_solaris_amd64.go
index 8531a190..23ed9fe5 100644
--- a/unix/ztypes_solaris_amd64.go
+++ b/unix/ztypes_solaris_amd64.go
@@ -211,6 +211,12 @@ type Cmsghdr struct {
 	Type  int32
 }
 
+type Inet4Pktinfo struct {
+	Ifindex  uint32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
 type Inet6Pktinfo struct {
 	Addr    [16]byte /* in6_addr */
 	Ifindex uint32
@@ -236,6 +242,7 @@ const (
 	SizeofIPv6Mreq         = 0x14
 	SizeofMsghdr           = 0x30
 	SizeofCmsghdr          = 0xc
+	SizeofInet4Pktinfo     = 0xc
 	SizeofInet6Pktinfo     = 0x14
 	SizeofIPv6MTUInfo      = 0x24
 	SizeofICMPv6Filter     = 0x20