diff --git a/src/libs/compat/freebsd11_network/Jamfile b/src/libs/compat/freebsd11_network/Jamfile
index 7410856b61..a91c44c88a 100644
--- a/src/libs/compat/freebsd11_network/Jamfile
+++ b/src/libs/compat/freebsd11_network/Jamfile
@@ -26,6 +26,7 @@ KernelStaticLibrary libfreebsd11_network.a :
 	fbsd_busdma_x86.c
 	fbsd_ether.c
 	fbsd_if_media.c
+	fbsd_kern_mbuf.c
 	fbsd_uipc_mbuf.c
 	fbsd_uipc_mbuf2.c
 	fbsd_mii.c
diff --git a/src/libs/compat/freebsd11_network/compat/sys/errno.h b/src/libs/compat/freebsd11_network/compat/sys/errno.h
index fd307ce311..34b559f3f1 100644
--- a/src/libs/compat/freebsd11_network/compat/sys/errno.h
+++ b/src/libs/compat/freebsd11_network/compat/sys/errno.h
@@ -9,6 +9,8 @@
 #include <posix/errno.h>
 
 
+#define EDOOFUS 		EINVAL
+
 /* pseudo-errors returned inside freebsd compat layer to modify return to process */
 #define	ERESTART		(B_ERRORS_END + 1)		/* restart syscall */
 #define EJUSTRETURN		(B_ERRORS_END + 2)		/* don't modify regs, just return */
diff --git a/src/libs/compat/freebsd11_network/compat/sys/mbuf.h b/src/libs/compat/freebsd11_network/compat/sys/mbuf.h
index 76aa89ab12..2d2636a9ed 100644
--- a/src/libs/compat/freebsd11_network/compat/sys/mbuf.h
+++ b/src/libs/compat/freebsd11_network/compat/sys/mbuf.h
@@ -70,6 +70,8 @@
 #define MGET(m, how, type)		((m) = m_get((how), (type)))
 #define MGETHDR(m, how, type)	((m) = m_gethdr((how), (type)))
 #define MCLGET(m, how)			m_clget((m), (how))
+#define m_getm(m, len, how, type)					\
+    m_getm2((m), (len), (how), (type), M_PKTHDR)
 
 #define mtod(m, type)	((type)((m)->m_data))
 
@@ -216,6 +218,7 @@ struct mbuf*	m_free(struct mbuf*);
 void			m_freem(struct mbuf*);
 struct mbuf*	m_get(int, short);
 struct mbuf*	m_get2(int size, int how, short type, int flags);
+struct mbuf *	m_getm2(struct mbuf *m, int len, int how, short type, int flags);
 struct mbuf*	m_gethdr(int, short);
 struct mbuf*	m_getjcl(int, short, int, int);
 u_int			m_length(struct mbuf*, struct mbuf**);
diff --git a/src/libs/compat/freebsd11_network/fbsd_kern_mbuf.c b/src/libs/compat/freebsd11_network/fbsd_kern_mbuf.c
new file mode 100644
index 0000000000..ee972f5dc3
--- /dev/null
+++ b/src/libs/compat/freebsd11_network/fbsd_kern_mbuf.c
@@ -0,0 +1,97 @@
+/*! NOTE: Most kern_mbuf functions are implemented by our mbuf.c; however,
+ *  a certain few non-allocation-related ones which we can copy wholesale
+ *  from FreeBSD live here. */
+/*-
+ * Copyright (c) 2004, 2005,
+ *	Bosko Milekic <bmilekic@FreeBSD.org>.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#include <sys/mbuf.h>
+
+/*
+ * Allocate a given length worth of mbufs and/or clusters (whatever fits
+ * best) and return a pointer to the top of the allocated chain.  If an
+ * existing mbuf chain is provided, then we will append the new chain
+ * to the existing one but still return the top of the newly allocated
+ * chain.
+ */
+struct mbuf *
+m_getm2(struct mbuf *m, int len, int how, short type, int flags)
+{
+	struct mbuf *mb, *nm = NULL, *mtail = NULL;
+
+	KASSERT(len >= 0, ("%s: len is < 0", __func__));
+
+	/* Validate flags. */
+	flags &= (M_PKTHDR | M_EOR);
+
+	/* Packet header mbuf must be first in chain. */
+	if ((flags & M_PKTHDR) && m != NULL)
+		flags &= ~M_PKTHDR;
+
+	/* Loop and append maximum sized mbufs to the chain tail. */
+	while (len > 0) {
+		if (len > MCLBYTES)
+			mb = m_getjcl(how, type, (flags & M_PKTHDR),
+			    MJUMPAGESIZE);
+		else if (len >= MINCLSIZE)
+			mb = m_getcl(how, type, (flags & M_PKTHDR));
+		else if (flags & M_PKTHDR)
+			mb = m_gethdr(how, type);
+		else
+			mb = m_get(how, type);
+
+		/* Fail the whole operation if one mbuf can't be allocated. */
+		if (mb == NULL) {
+			if (nm != NULL)
+				m_freem(nm);
+			return (NULL);
+		}
+
+		/* Book keeping. */
+		len -= M_SIZE(mb);
+		if (mtail != NULL)
+			mtail->m_next = mb;
+		else
+			nm = mb;
+		mtail = mb;
+		flags &= ~M_PKTHDR;	/* Only valid on the first mbuf. */
+	}
+	if (flags & M_EOR)
+		mtail->m_flags |= M_EOR;  /* Only valid on the last mbuf. */
+
+	/* If mbuf was supplied, append new chain to the end of it. */
+	if (m != NULL) {
+		for (mtail = m; mtail->m_next != NULL; mtail = mtail->m_next)
+			;
+		mtail->m_next = nm;
+		mtail->m_flags &= ~M_EOR;
+	} else
+		m = nm;
+
+	return (m);
+}
+