diff --git a/isisd/isis_bpf.c b/isisd/isis_bpf.c
index e916a50883..19695e7ab4 100644
--- a/isisd/isis_bpf.c
+++ b/isisd/isis_bpf.c
@@ -73,7 +73,7 @@ static const uint8_t ALL_ISS[6] = {0x09, 0x00, 0x2B, 0x00, 0x00, 0x05};
 static const uint8_t ALL_ESS[6] = {0x09, 0x00, 0x2B, 0x00, 0x00, 0x04};
 #endif
 
-static char sock_buff[8192];
+static char sock_buff[16384];
 
 static int open_bpf_dev(struct isis_circuit *circuit)
 {
diff --git a/isisd/isis_dlpi.c b/isisd/isis_dlpi.c
index ea16f4af7f..5c15d1d29d 100644
--- a/isisd/isis_dlpi.c
+++ b/isisd/isis_dlpi.c
@@ -62,7 +62,7 @@ static const uint8_t ALL_ISS[6] = {0x09, 0x00, 0x2B, 0x00, 0x00, 0x05};
 static const uint8_t ALL_ESS[6] = {0x09, 0x00, 0x2B, 0x00, 0x00, 0x04};
 #endif
 
-static uint8_t sock_buff[8192];
+static uint8_t sock_buff[16384];
 
 static unsigned short pf_filter[] = {
 	ENF_PUSHWORD + 0,       /* Get the SSAP/DSAP values */