diff --git a/sys/dev/sfxge/common/efx.h b/sys/dev/sfxge/common/efx.h
index fe9b36a9dc5d..997c8a930d0c 100644
--- a/sys/dev/sfxge/common/efx.h
+++ b/sys/dev/sfxge/common/efx.h
@@ -1320,6 +1320,7 @@ typedef struct efx_nic_cfg_s {
 	boolean_t		enc_bug35388_workaround;
 	boolean_t		enc_bug41750_workaround;
 	boolean_t		enc_bug61265_workaround;
+	boolean_t		enc_bug61297_workaround;
 	boolean_t		enc_rx_batching_enabled;
 	/* Maximum number of descriptors completed in an rx event. */
 	uint32_t		enc_rx_batch_max;
diff --git a/sys/dev/sfxge/common/hunt_nic.c b/sys/dev/sfxge/common/hunt_nic.c
index 2e0cf24ed97b..d97cdcbec30f 100644
--- a/sys/dev/sfxge/common/hunt_nic.c
+++ b/sys/dev/sfxge/common/hunt_nic.c
@@ -217,6 +217,9 @@ hunt_board_cfg(
 
 	encp->enc_bug61265_workaround = B_FALSE; /* Medford only */
 
+	/* Checksums for TSO sends can be incorrect on Huntington. */
+	encp->enc_bug61297_workaround = B_TRUE;
+
 	/* Alignment for receive packet DMA buffers */
 	encp->enc_rx_buf_align_start = 1;
 	encp->enc_rx_buf_align_end = 64; /* RX DMA end padding */
diff --git a/sys/dev/sfxge/common/medford2_nic.c b/sys/dev/sfxge/common/medford2_nic.c
index 8ea7dedb5f7a..14c2fd73bf7f 100644
--- a/sys/dev/sfxge/common/medford2_nic.c
+++ b/sys/dev/sfxge/common/medford2_nic.c
@@ -125,6 +125,9 @@ medford2_board_cfg(
 	else
 		goto fail1;
 
+	/* Checksums for TSO sends should always be correct on Medford2. */
+	encp->enc_bug61297_workaround = B_FALSE;
+
 	/* Get clock frequencies (in MHz). */
 	if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0)
 		goto fail2;
diff --git a/sys/dev/sfxge/common/medford_nic.c b/sys/dev/sfxge/common/medford_nic.c
index 7fe13958071f..6790704678ce 100644
--- a/sys/dev/sfxge/common/medford_nic.c
+++ b/sys/dev/sfxge/common/medford_nic.c
@@ -121,6 +121,9 @@ medford_board_cfg(
 	else
 		goto fail1;
 
+	/* Checksums for TSO sends can be incorrect on Medford. */
+	encp->enc_bug61297_workaround = B_TRUE;
+
 	/* Get clock frequencies (in MHz). */
 	if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0)
 		goto fail2;