rx overflow

hello, i’seen lately lots of overflow onlny at rx:

name=“ether4” driver-rx-byte=10 248 260 992 114 driver-rx-packet=12 374 782 666
driver-tx-byte=11 859 304 476 163 driver-tx-packet=13 516 211 137 rx-bytes=10 297 749 962 044
rx-too-short=0 rx-64=1 132 792 021 rx-65-127=3 995 920 629 rx-128-255=426 920 963
rx-256-511=175 707 379 rx-512-1023=157 269 134 rx-1024-1518=6 490 241 286 rx-1519-max=0
rx-too-long=0 rx-broadcast=305 189 rx-pause=0 rx-multicast=1 287 rx-fcs-error=0 rx-align-error=0
rx-fragment=0 rx-overflow=4 083 868 tx-bytes=11 884 415 245 109 tx-64=1 756 809 689
tx-65-127=3 410 684 776 tx-128-255=316 828 561 tx-256-511=160 709 553 tx-512-1023=234 482 498
tx-1024-1518=7 634 502 315 tx-1519-max=0 tx-too-long=0 tx-broadcast=13 127 tx-pause=0
tx-multicast=12 900 tx-underrun=0 tx-collision=0 tx-excessive-collision=0 tx-multiple-collision=0
tx-single-collision=0 tx-excessive-deferred=0 tx-deferred=0 tx-late-collision=0

or:

i know that this is happening in linux when the 64bit network card is in 32bit slot (as i know)

why is that overflow and how can i avoid it ?

regards.