Alors je poursuis mes investigations :
Le resultat d'un "lspci" pour les interfaces reseau :
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
Subsystem: Device 7470:3468
Flags: bus master, fast devsel, latency 0, IRQ 40
I/O ports at e000 [size=11]
Memory at fea00000 (64-bit, non-prefetchable) [size=4K]
Memory at de000000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable- Mask- TabSize=4
Capabilities: [d0] Vital Product Data <?>
Capabilities: [100] Advanced Error Reporting <?>
Capabilities: [140] Virtual Channel <?>
Capabilities: [160] Device Serial Number 00-e0-4c-68-00-00-00-00
Kernel driver in use: r8168
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
Subsystem: Micro-Star International Co., Ltd. Device 7698
Flags: bus master, fast devsel, latency 0, IRQ 41
I/O ports at d000 [size=11]
Memory at ce004000 (64-bit, prefetchable) [size=4K]
Memory at ce000000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable- Mask- TabSize=4
Capabilities: [d0] Vital Product Data <?>
Capabilities: [100] Advanced Error Reporting <?>
Capabilities: [140] Virtual Channel <?>
Capabilities: [160] Device Serial Number 00-e0-4c-68-00-00-00-00
Kernel driver in use: r8168
puis un "dmesg | grep -i r8168"
[ 2.994240] r8168 Gigabit Ethernet driver 8.036.00-NAPI loaded
[ 2.994418] r8168 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 2.994569] r8168 0000:01:00.0: setting latency timer to 64
[ 2.994665] r8168 0000:01:00.0: irq 40 for MSI/MSI-X
[ 2.998707] r8168: This product is covered by one or more of the following patents: US6,570,884, US6,115,776, and US6,327,625.
[ 2.998928] r8168 Copyright (C) 2013 Realtek NIC software team
[ 2.999568] r8168 Gigabit Ethernet driver 8.036.00-NAPI loaded
[ 2.999740] r8168 0000:03:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 2.999893] r8168 0000:03:00.0: setting latency timer to 64
[ 2.999992] r8168 0000:03:00.0: irq 41 for MSI/MSI-X
[ 3.007689] r8168: This product is covered by one or more of the following patents: US6,570,884, US6,115,776, and US6,327,625.
[ 3.007908] r8168 Copyright (C) 2013 Realtek NIC software team
[ 12.460629] r8168: eth0: link up
[ 91.618053] r8168: eth0: link down
[ 110.676627] r8168: eth0: link up
Je dois bien dire que ça ne me parle pas des masses si ce n'est que c'est bien le bon pilote qui est utilisé...